diff --git a/packages/core/utils/src/dal/mikro-orm/utils.ts b/packages/core/utils/src/dal/mikro-orm/utils.ts
index a80c5b80d3..4e7637e6db 100644
--- a/packages/core/utils/src/dal/mikro-orm/utils.ts
+++ b/packages/core/utils/src/dal/mikro-orm/utils.ts
@@ -1,6 +1,6 @@
-import { buildQuery } from "../../modules-sdk"
 import { EntityMetadata, FindOptions, wrap } from "@mikro-orm/core"
 import { SqlEntityManager } from "@mikro-orm/postgresql"
+import { buildQuery } from "../../modules-sdk"
 
 function detectCircularDependency(
   manager: SqlEntityManager,
@@ -15,8 +15,9 @@ function detectCircularDependency(
   visited.add(entityMetadata.className)
 
   const relations = entityMetadata.relations
+
   const relationsToCascade = relations.filter((relation) =>
-    relation.cascade.includes("soft-remove" as any)
+    relation.cascade?.includes("soft-remove" as any)
   )
 
   for (const relation of relationsToCascade) {
@@ -63,7 +64,7 @@ async function performCascadingSoftDeletion<T>(
   const relations = manager.getDriver().getMetadata().get(entityName).relations
 
   const relationsToCascade = relations.filter((relation) =>
-    relation.cascade.includes("soft-remove" as any)
+    relation.cascade?.includes("soft-remove" as any)
   )
 
   for (const relation of relationsToCascade) {
diff --git a/packages/core/utils/src/dml/helpers/entity-builder/define-relationship.ts b/packages/core/utils/src/dml/helpers/entity-builder/define-relationship.ts
index d0852b5e6d..8dda65a0e5 100644
--- a/packages/core/utils/src/dml/helpers/entity-builder/define-relationship.ts
+++ b/packages/core/utils/src/dml/helpers/entity-builder/define-relationship.ts
@@ -9,9 +9,9 @@ import {
   BeforeCreate,
   ManyToMany,
   ManyToOne,
+  OnInit,
   OneToMany,
   OneToOne,
-  OnInit,
   Property,
 } from "@mikro-orm/core"
 import { camelToSnakeCase, pluralize } from "../../../common"
diff --git a/packages/modules/region/mikro-orm.config.dev.ts b/packages/modules/region/mikro-orm.config.dev.ts
index b5f6f37912..4fa735e4c3 100644
--- a/packages/modules/region/mikro-orm.config.dev.ts
+++ b/packages/modules/region/mikro-orm.config.dev.ts
@@ -1,12 +1,7 @@
+import { defineMikroOrmCliConfig } from "@medusajs/utils"
 import * as entities from "./src/models"
-import { TSMigrationGenerator } from "@medusajs/utils"
 
-module.exports = {
+export default defineMikroOrmCliConfig({
   entities: Object.values(entities),
-  schema: "public",
-  clientUrl: "postgres://postgres@localhost/medusa-region",
-  type: "postgresql",
-  migrations: {
-    generator: TSMigrationGenerator,
-  },
-}
+  databaseName: "medusa-region",
+})
\ No newline at end of file
diff --git a/packages/modules/region/src/loaders/defaults.ts b/packages/modules/region/src/loaders/defaults.ts
index d7b3d60c73..009065364e 100644
--- a/packages/modules/region/src/loaders/defaults.ts
+++ b/packages/modules/region/src/loaders/defaults.ts
@@ -1,13 +1,14 @@
 import { LoaderOptions, Logger, ModulesSdkTypes } from "@medusajs/types"
 import { ContainerRegistrationKeys, DefaultsUtils } from "@medusajs/utils"
-import { Country } from "@models"
+import { RegionCountry } from "@models"
 
 export default async ({ container }: LoaderOptions): Promise<void> => {
   // TODO: Add default logger to the container when running tests
   const logger =
     container.resolve<Logger>(ContainerRegistrationKeys.LOGGER) ?? console
-  const countryService_: ModulesSdkTypes.IMedusaInternalService<Country> =
-    container.resolve("countryService")
+  const countryService_: ModulesSdkTypes.IMedusaInternalService<
+    typeof RegionCountry
+  > = container.resolve("countryService")
 
   try {
     const normalizedCountries = DefaultsUtils.defaultCountries.map((c) => ({
diff --git a/packages/modules/region/src/migrations/.snapshot-medusa-region.json b/packages/modules/region/src/migrations/.snapshot-medusa-region.json
index 5b30980831..a2e69d800c 100644
--- a/packages/modules/region/src/migrations/.snapshot-medusa-region.json
+++ b/packages/modules/region/src/migrations/.snapshot-medusa-region.json
@@ -1,5 +1,7 @@
 {
-  "namespaces": ["public"],
+  "namespaces": [
+    "public"
+  ],
   "name": "public",
   "tables": [
     {
@@ -86,16 +88,11 @@
       "name": "region",
       "schema": "public",
       "indexes": [
-        {
-          "columnNames": ["deleted_at"],
-          "composite": false,
-          "keyName": "IDX_region_deleted_at",
-          "primary": false,
-          "unique": false
-        },
         {
           "keyName": "region_pkey",
-          "columnNames": ["id"],
+          "columnNames": [
+            "id"
+          ],
           "composite": false,
           "primary": true,
           "unique": true
@@ -159,14 +156,65 @@
           "primary": false,
           "nullable": true,
           "mappedType": "text"
+        },
+        "metadata": {
+          "name": "metadata",
+          "type": "jsonb",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "mappedType": "json"
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "length": 6,
+          "default": "now()",
+          "mappedType": "datetime"
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": false,
+          "length": 6,
+          "default": "now()",
+          "mappedType": "datetime"
+        },
+        "deleted_at": {
+          "name": "deleted_at",
+          "type": "timestamptz",
+          "unsigned": false,
+          "autoincrement": false,
+          "primary": false,
+          "nullable": true,
+          "length": 6,
+          "mappedType": "datetime"
         }
       },
       "name": "region_country",
       "schema": "public",
       "indexes": [
+        {
+          "keyName": "IDX_region_country_region_id_iso_2_unique",
+          "columnNames": [],
+          "composite": false,
+          "primary": false,
+          "unique": false,
+          "expression": "CREATE UNIQUE INDEX IF NOT EXISTS \"IDX_region_country_region_id_iso_2_unique\" ON \"region_country\" (region_id, iso_2)"
+        },
         {
           "keyName": "region_country_pkey",
-          "columnNames": ["iso_2"],
+          "columnNames": [
+            "iso_2"
+          ],
           "composite": false,
           "primary": true,
           "unique": true
@@ -176,9 +224,13 @@
       "foreignKeys": {
         "region_country_region_id_foreign": {
           "constraintName": "region_country_region_id_foreign",
-          "columnNames": ["region_id"],
+          "columnNames": [
+            "region_id"
+          ],
           "localTableName": "public.region_country",
-          "referencedColumnNames": ["id"],
+          "referencedColumnNames": [
+            "id"
+          ],
           "referencedTableName": "public.region",
           "deleteRule": "set null",
           "updateRule": "cascade"
diff --git a/packages/modules/region/src/migrations/Migration20240624200006.ts b/packages/modules/region/src/migrations/Migration20240624200006.ts
new file mode 100644
index 0000000000..d2047d2353
--- /dev/null
+++ b/packages/modules/region/src/migrations/Migration20240624200006.ts
@@ -0,0 +1,39 @@
+import { generatePostgresAlterColummnIfExistStatement } from "@medusajs/utils"
+import { Migration } from "@mikro-orm/migrations"
+
+export class Migration20240624200006 extends Migration {
+  async up(): Promise<void> {
+    this.addSql(
+      'ALTER TABLE IF EXISTS "region_country" ADD COLUMN IF NOT EXISTS "metadata" jsonb null, ADD COLUMN "created_at" timestamptz NOT NULL DEFAULT NOW(), ADD COLUMN "updated_at" timestamptz NOT NULL DEFAULT NOW(), ADD COLUMN "deleted_at" timestamptz NULL;'
+    )
+    this.addSql(
+      generatePostgresAlterColummnIfExistStatement(
+        "region_country",
+        ["region_id"],
+        `DROP NOT NULL`
+      )
+    )
+  }
+
+  async down(): Promise<void> {
+    this.addSql(
+      'ALTER TABLE IF EXISTS "region_country" DROP COLUMN IF EXISTS "metadata";'
+    )
+    this.addSql(
+      'ALTER TABLE IF EXISTS "region_country" DROP COLUMN IF EXISTS "created_at";'
+    )
+    this.addSql(
+      'ALTER TABLE IF EXISTS "region_country" DROP COLUMN IF EXISTS "updated_at";'
+    )
+    this.addSql(
+      'ALTER TABLE IF EXISTS "region_country" DROP COLUMN IF EXISTS "deleted_at";'
+    )
+    this.addSql(
+      generatePostgresAlterColummnIfExistStatement(
+        "region_country",
+        ["region_id"],
+        `SET NOT NULL`
+      )
+    )
+  }
+}
diff --git a/packages/modules/region/src/models/country.ts b/packages/modules/region/src/models/country.ts
index 4150ee0ec9..6178307ee6 100644
--- a/packages/modules/region/src/models/country.ts
+++ b/packages/modules/region/src/models/country.ts
@@ -1,44 +1,28 @@
-import { Entity, ManyToOne, PrimaryKey, Property } from "@mikro-orm/core"
-
-import { createPsqlIndexStatementHelper } from "@medusajs/utils"
+import { model } from "@medusajs/utils"
 import Region from "./region"
 
-// We don't need a partial index on deleted_at here since we don't support soft deletes on countries
-const regionIdIsoIndexName = "IDX_region_country_region_id_iso_2_unique"
-const RegionIdIsoIndexStatement = createPsqlIndexStatementHelper({
-  name: regionIdIsoIndexName,
-  tableName: "region_country",
-  columns: ["region_id", "iso_2"],
-  unique: true,
-})
+const Country = model
+  .define(
+    { name: "Country", tableName: "region_country" },
+    {
+      iso_2: model.text().searchable().primaryKey(),
+      iso_3: model.text(),
+      num_code: model.text(),
+      name: model.text().searchable(),
+      display_name: model.text(),
+      region: model
+        .belongsTo(() => Region, { mappedBy: "countries" })
+        .nullable(),
+      metadata: model.json().nullable(),
+    }
+  )
+  .indexes([
+    {
+      // TODO: Remove ts-ignore when field inference takes into account the nullable property
+      // @ts-ignore
+      on: ["region_id", "iso_2"],
+      unique: true,
+    },
+  ])
 
-RegionIdIsoIndexStatement.MikroORMIndex()
-@Entity({ tableName: "region_country" })
-export default class Country {
-  @PrimaryKey({ columnType: "text" })
-  @Property({ columnType: "text" })
-  iso_2: string
-
-  @Property({ columnType: "text" })
-  iso_3: string
-
-  @Property({ columnType: "text" })
-  num_code: string
-
-  @Property({ columnType: "text" })
-  name: string
-
-  @Property({ columnType: "text" })
-  display_name: string
-
-  @Property({ columnType: "text", nullable: true })
-  region_id?: string | null = null
-
-  @ManyToOne({
-    entity: () => Region,
-    fieldName: "region_id",
-    nullable: true,
-    onDelete: "set null",
-  })
-  region?: Region | null
-}
+export default Country
diff --git a/packages/modules/region/src/models/index.ts b/packages/modules/region/src/models/index.ts
index f4e91bedbc..95d96d14bd 100644
--- a/packages/modules/region/src/models/index.ts
+++ b/packages/modules/region/src/models/index.ts
@@ -1,2 +1,3 @@
-export { default as Country } from "./country"
+export { default as RegionCountry } from "./country"
 export { default as Region } from "./region"
+
diff --git a/packages/modules/region/src/models/region.ts b/packages/modules/region/src/models/region.ts
index bebd60d297..dabef95524 100644
--- a/packages/modules/region/src/models/region.ts
+++ b/packages/modules/region/src/models/region.ts
@@ -1,72 +1,13 @@
-import { DAL } from "@medusajs/types"
-import { DALUtils, Searchable, generateEntityId } from "@medusajs/utils"
-import {
-  BeforeCreate,
-  Collection,
-  Entity,
-  Filter,
-  Index,
-  OnInit,
-  OneToMany,
-  OptionalProps,
-  PrimaryKey,
-  Property,
-} from "@mikro-orm/core"
-import Country from "./country"
+import { model } from "@medusajs/utils"
+import RegionCountry from "./country"
 
-type RegionOptionalProps = "countries" | DAL.SoftDeletableEntityDateColumns
+const Region = model.define("region", {
+  id: model.id({ prefix: "reg" }),
+  name: model.text().searchable(),
+  currency_code: model.text().searchable(),
+  automatic_taxes: model.boolean().default(true),
+  countries: model.hasMany(() => RegionCountry),
+  metadata: model.json().nullable(),
+})
 
-@Entity({ tableName: "region" })
-@Filter(DALUtils.mikroOrmSoftDeletableFilterOptions)
-export default class Region {
-  [OptionalProps]?: RegionOptionalProps
-
-  @PrimaryKey({ columnType: "text" })
-  id: string
-
-  @Searchable()
-  @Property({ columnType: "text" })
-  name: string
-
-  @Searchable()
-  @Property({ columnType: "text" })
-  currency_code: string
-
-  @Property({ columnType: "boolean" })
-  automatic_taxes: boolean = true
-
-  @OneToMany(() => Country, (country) => country.region)
-  countries = new Collection<Country>(this)
-
-  @Property({ columnType: "jsonb", nullable: true })
-  metadata: Record<string, unknown> | null = null
-
-  @Property({
-    onCreate: () => new Date(),
-    columnType: "timestamptz",
-    defaultRaw: "now()",
-  })
-  created_at: Date
-
-  @Property({
-    onCreate: () => new Date(),
-    onUpdate: () => new Date(),
-    columnType: "timestamptz",
-    defaultRaw: "now()",
-  })
-  updated_at: Date
-
-  @Index({ name: "IDX_region_deleted_at" })
-  @Property({ columnType: "timestamptz", nullable: true })
-  deleted_at: Date | null = null
-
-  @BeforeCreate()
-  onCreate() {
-    this.id = generateEntityId(this.id, "reg")
-  }
-
-  @OnInit()
-  onInit() {
-    this.id = generateEntityId(this.id, "reg")
-  }
-}
+export default Region
diff --git a/packages/modules/region/src/services/region-module.ts b/packages/modules/region/src/services/region-module.ts
index b7fda5cb48..34812b9d39 100644
--- a/packages/modules/region/src/services/region-module.ts
+++ b/packages/modules/region/src/services/region-module.ts
@@ -3,8 +3,9 @@ import {
   CreateRegionDTO,
   DAL,
   FilterableRegionProps,
-  InternalModuleDeclaration,
   IRegionModuleService,
+  InferEntityType,
+  InternalModuleDeclaration,
   ModuleJoinerConfig,
   ModulesSdkTypes,
   RegionCountryDTO,
@@ -14,20 +15,18 @@ import {
   UpsertRegionDTO,
 } from "@medusajs/types"
 import {
-  arrayDifference,
-  getDuplicates,
   InjectManager,
   InjectTransactionManager,
-  isString,
   MedusaContext,
   MedusaError,
   MedusaService,
+  arrayDifference,
+  getDuplicates,
+  isString,
   promiseAll,
   removeUndefined,
 } from "@medusajs/utils"
-
-import { Country, Region } from "@models"
-
+import { RegionCountry as Country, Region } from "@models"
 import { UpdateRegionInput } from "@types"
 import { entityNameToLinkableKeysMap, joinerConfig } from "../joiner-config"
 
@@ -49,8 +48,12 @@ export default class RegionModuleService
   implements IRegionModuleService
 {
   protected baseRepository_: DAL.RepositoryService
-  protected readonly regionService_: ModulesSdkTypes.IMedusaInternalService<Region>
-  protected readonly countryService_: ModulesSdkTypes.IMedusaInternalService<Country>
+  protected readonly regionService_: ModulesSdkTypes.IMedusaInternalService<
+    typeof Region
+  >
+  protected readonly countryService_: ModulesSdkTypes.IMedusaInternalService<
+    typeof Country
+  >
 
   constructor(
     { baseRepository, regionService, countryService }: InjectedDependencies,
@@ -67,7 +70,7 @@ export default class RegionModuleService
     return joinerConfig
   }
 
-  //@ts-expect-error
+  // @ts-expect-error
   async createRegions(
     data: CreateRegionDTO[],
     sharedContext?: Context
@@ -95,7 +98,7 @@ export default class RegionModuleService
   async createRegions_(
     data: CreateRegionDTO[],
     @MedusaContext() sharedContext: Context = {}
-  ): Promise<Region[]> {
+  ): Promise<InferEntityType<typeof Region>[]> {
     let normalizedInput = RegionModuleService.normalizeInput(data)
 
     let normalizedDbRegions = normalizedInput.map((region) =>
@@ -172,7 +175,7 @@ export default class RegionModuleService
       (region): region is CreateRegionDTO => !region.id
     )
 
-    const operations: Promise<Region[]>[] = []
+    const operations: Promise<InferEntityType<typeof Region>[]>[] = []
 
     if (forCreate.length) {
       operations.push(this.createRegions_(forCreate, sharedContext))
@@ -187,7 +190,7 @@ export default class RegionModuleService
     )
   }
 
-  //@ts-expect-error
+  // @ts-expect-error
   async updateRegions(
     id: string,
     data: UpdateRegionDTO,
@@ -237,7 +240,7 @@ export default class RegionModuleService
   protected async updateRegions_(
     data: UpdateRegionInput[],
     @MedusaContext() sharedContext: Context = {}
-  ): Promise<Region[]> {
+  ): Promise<InferEntityType<typeof Region>[]> {
     const normalizedInput = RegionModuleService.normalizeInput(data)
 
     // If countries are being updated for a region, first make previously set countries' region to null to get to a clean slate.
@@ -306,7 +309,7 @@ export default class RegionModuleService
   private async validateCountries(
     countries: string[] | undefined,
     sharedContext: Context
-  ): Promise<Country[]> {
+  ): Promise<InferEntityType<typeof Country>[]> {
     if (!countries?.length) {
       return []
     }
@@ -343,6 +346,7 @@ export default class RegionModuleService
     }
 
     // Countries that already have a region already assigned to them
+    // @ts-ignore
     const countriesWithRegion = countriesInDb.filter((c) => !!c.region_id)
     if (countriesWithRegion.length) {
       throw new MedusaError(