diff --git a/core/src/main/kotlin/com/bitwarden/core/data/manager/model/FlagKey.kt b/core/src/main/kotlin/com/bitwarden/core/data/manager/model/FlagKey.kt
index 6b950e1563..31e9a4a86b 100644
--- a/core/src/main/kotlin/com/bitwarden/core/data/manager/model/FlagKey.kt
+++ b/core/src/main/kotlin/com/bitwarden/core/data/manager/model/FlagKey.kt
@@ -35,6 +35,7 @@ sealed class FlagKey<out T : Any> {
                 ForceUpdateKdfSettings,
                 CipherKeyEncryption,
                 NoLogoutOnKdfChange,
+                MigrateMyVaultToMyItems,
             )
         }
     }
@@ -89,6 +90,14 @@ sealed class FlagKey<out T : Any> {
         override val defaultValue: Boolean = false
     }
 
+    /**
+     *  Data object holding the feature flag key for the Migrate My Vault to My Items feature.
+     */
+    data object MigrateMyVaultToMyItems : FlagKey<Boolean>() {
+        override val keyName: String = "pm-20558-migrate-myvault-to-myitems"
+        override val defaultValue: Boolean = false
+    }
+
     //region Dummy keys for testing
     /**
      * Data object holding the key for a [Boolean] flag to be used in tests.
diff --git a/core/src/test/kotlin/com/bitwarden/core/data/manager/model/FlagKeyTest.kt b/core/src/test/kotlin/com/bitwarden/core/data/manager/model/FlagKeyTest.kt
index aa28de31fc..cc42ceb602 100644
--- a/core/src/test/kotlin/com/bitwarden/core/data/manager/model/FlagKeyTest.kt
+++ b/core/src/test/kotlin/com/bitwarden/core/data/manager/model/FlagKeyTest.kt
@@ -28,6 +28,10 @@ class FlagKeyTest {
             FlagKey.ForceUpdateKdfSettings.keyName,
             "pm-18021-force-update-kdf-settings",
         )
+        assertEquals(
+            FlagKey.MigrateMyVaultToMyItems.keyName,
+            "pm-20558-migrate-myvault-to-myitems",
+        )
     }
 
     @Test
@@ -39,6 +43,7 @@ class FlagKeyTest {
                 FlagKey.CipherKeyEncryption,
                 FlagKey.BitwardenAuthenticationEnabled,
                 FlagKey.ForceUpdateKdfSettings,
+                FlagKey.MigrateMyVaultToMyItems,
             ).all {
                 !it.defaultValue
             },
diff --git a/ui/src/main/kotlin/com/bitwarden/ui/platform/components/debug/FeatureFlagListItems.kt b/ui/src/main/kotlin/com/bitwarden/ui/platform/components/debug/FeatureFlagListItems.kt
index fbad9acb4d..f21d983315 100644
--- a/ui/src/main/kotlin/com/bitwarden/ui/platform/components/debug/FeatureFlagListItems.kt
+++ b/ui/src/main/kotlin/com/bitwarden/ui/platform/components/debug/FeatureFlagListItems.kt
@@ -29,6 +29,7 @@ fun <T : Any> FlagKey<T>.ListItemContent(
     FlagKey.CipherKeyEncryption,
     FlagKey.ForceUpdateKdfSettings,
     FlagKey.NoLogoutOnKdfChange,
+    FlagKey.MigrateMyVaultToMyItems,
         -> {
         @Suppress("UNCHECKED_CAST")
         BooleanFlagItem(
@@ -78,4 +79,5 @@ private fun <T : Any> FlagKey<T>.getDisplayLabel(): String = when (this) {
     FlagKey.BitwardenAuthenticationEnabled -> {
         stringResource(BitwardenString.bitwarden_authentication_enabled)
     }
+    FlagKey.MigrateMyVaultToMyItems -> stringResource(BitwardenString.migrate_my_vault_to_my_items)
 }
diff --git a/ui/src/main/res/values/strings_non_localized.xml b/ui/src/main/res/values/strings_non_localized.xml
index 4495a77df6..8e10925d87 100644
--- a/ui/src/main/res/values/strings_non_localized.xml
+++ b/ui/src/main/res/values/strings_non_localized.xml
@@ -38,6 +38,7 @@
     <string name="import_format_label_aegis_json">Aegis (.json)</string>
     <string name="force_update_kdf_settings">Force update KDF settings</string>
     <string name="avoid_logout_on_kdf_change">Avoid logout on KDF change</string>
+    <string name="migrate_my_vault_to_my_items">Migrate My Vault to My Items</string>
 
     <!-- endregion Debug Menu -->
 </resources>