diff --git a/app/src/main/java/to/bitkit/repositories/ActivityRepo.kt b/app/src/main/java/to/bitkit/repositories/ActivityRepo.kt
index 6385f5c1d..bae9f6c2b 100644
--- a/app/src/main/java/to/bitkit/repositories/ActivityRepo.kt
+++ b/app/src/main/java/to/bitkit/repositories/ActivityRepo.kt
@@ -928,19 +928,35 @@ class ActivityRepo @Inject constructor(
         }
     }
 
+    /**
+     * Applies each slice of the backup envelope on its own so one rejected record cannot discard the others.
+     * Core fails a bulk write as a whole, so applying all three slices together would let a single unusable tag cost
+     * the activities and the closed channels too. The overall result still fails when any slice failed, keeping
+     * [BackupRepo] from treating a partial restore as authoritative and rewriting a good backup with it.
+     */
     suspend fun restoreFromBackup(payload: ActivityBackupV1): Result<Unit> = withContext(bgDispatcher) {
-        runCatching {
-            coreService.activity.upsertList(payload.activities)
-            coreService.activity.upsertTags(payload.activityTags)
-            coreService.activity.upsertClosedChannelList(payload.closedChannels)
-        }.onSuccess {
-            Logger.debug(
-                "Restored ${payload.activities.size} activities, ${payload.activityTags.size} activity tags, " +
-                    "${payload.closedChannels.size} closed channels",
-                context = TAG,
-            )
-            notifyActivitiesChanged(tagsChanged = true)
+        val failures = listOf(
+            "activities" to runSuspendCatching { coreService.activity.upsertList(payload.activities) },
+            "activityTags" to runSuspendCatching { coreService.activity.upsertTags(payload.activityTags) },
+            "closedChannels" to runSuspendCatching {
+                coreService.activity.upsertClosedChannelList(payload.closedChannels)
+            },
+        ).mapNotNull { (slice, result) ->
+            result.exceptionOrNull()?.also {
+                Logger.error("Failed to restore '$slice' activity backup slice", it, context = TAG)
+            }
         }
+
+        notifyActivitiesChanged(tagsChanged = true)
+
+        failures.firstOrNull()?.let { return@withContext Result.failure(it) }
+
+        Logger.debug(
+            "Restored ${payload.activities.size} activities, ${payload.activityTags.size} activity tags, " +
+                "${payload.closedChannels.size} closed channels",
+            context = TAG,
+        )
+        return@withContext Result.success(Unit)
     }
 
     suspend fun markAllUnseenActivitiesAsSeen(): Result<Unit> = withContext(bgDispatcher) {
diff --git a/app/src/test/java/to/bitkit/repositories/ActivityRepoTest.kt b/app/src/test/java/to/bitkit/repositories/ActivityRepoTest.kt
index 728a5721f..15d85bb2b 100644
--- a/app/src/test/java/to/bitkit/repositories/ActivityRepoTest.kt
+++ b/app/src/test/java/to/bitkit/repositories/ActivityRepoTest.kt
@@ -3,6 +3,7 @@ package to.bitkit.repositories
 import com.synonym.bitkitcore.Activity
 import com.synonym.bitkitcore.ActivityFilter
 import com.synonym.bitkitcore.ActivityTags
+import com.synonym.bitkitcore.ClosedChannelDetails
 import com.synonym.bitkitcore.IcJitEntry
 import com.synonym.bitkitcore.LightningActivity
 import com.synonym.bitkitcore.OnchainActivity
@@ -30,6 +31,7 @@ import to.bitkit.data.dto.PendingBoostActivity
 import to.bitkit.ext.create
 import to.bitkit.ext.createChannelDetails
 import to.bitkit.ext.mock
+import to.bitkit.models.ActivityBackupV1
 import to.bitkit.models.WalletScope
 import to.bitkit.services.CoreService
 import to.bitkit.services.HwSnapshotResult
@@ -69,6 +71,10 @@ class ActivityRepoTest : BaseUnitTest() {
         on { v1 } doReturn testActivityV1
     }
 
+    private val backupTags by lazy { ActivityTags(WalletScope.default, "activity1", listOf("daily")) }
+
+    private val backupClosedChannel = mock<ClosedChannelDetails>()
+
     private val baseOnchainActivity = OnchainActivity.create(
         walletId = "wallet0",
         id = "base_activity_id",
@@ -857,6 +863,63 @@ class ActivityRepoTest : BaseUnitTest() {
         assertEquals(emptyList(), result)
     }
 
+    @Test
+    fun `restoreFromBackup applies every slice and signals tag changes`() = test {
+        val tagsBefore = sut.activityTagsChanged.value
+
+        val result = sut.restoreFromBackup(backupPayload())
+
+        assertTrue(result.isSuccess)
+        verify(coreService.activity).upsertList(listOf(testActivity))
+        verify(coreService.activity).upsertTags(listOf(backupTags))
+        verify(coreService.activity).upsertClosedChannelList(listOf(backupClosedChannel))
+        assertTrue(sut.activityTagsChanged.value > tagsBefore)
+    }
+
+    @Test
+    fun `restoreFromBackup applies remaining slices when the tags slice fails`() = test {
+        whenever(coreService.activity.upsertTags(any()))
+            .thenThrow(RuntimeException("Failed to insert tag: FOREIGN KEY constraint failed"))
+
+        val result = sut.restoreFromBackup(backupPayload())
+
+        // One unusable tag must not cost the activities or the closed channels.
+        verify(coreService.activity).upsertList(listOf(testActivity))
+        verify(coreService.activity).upsertClosedChannelList(listOf(backupClosedChannel))
+        // Still a failure, so BackupRepo never rewrites a good backup with partial state.
+        assertTrue(result.isFailure)
+    }
+
+    @Test
+    fun `restoreFromBackup applies remaining slices when the activities slice fails`() = test {
+        whenever(coreService.activity.upsertList(any())).thenThrow(RuntimeException("upsert failed"))
+
+        val result = sut.restoreFromBackup(backupPayload())
+
+        verify(coreService.activity).upsertTags(listOf(backupTags))
+        verify(coreService.activity).upsertClosedChannelList(listOf(backupClosedChannel))
+        assertTrue(result.isFailure)
+    }
+
+    @Test
+    fun `restoreFromBackup rethrows cancellation`() = test {
+        val cancellation = CancellationException("cancelled")
+        whenever(coreService.activity.upsertTags(any())).thenThrow(cancellation)
+
+        val thrown = assertFailsWith<CancellationException> {
+            sut.restoreFromBackup(backupPayload())
+        }
+
+        assertEquals(cancellation.message, thrown.message)
+    }
+
+    private fun backupPayload() = ActivityBackupV1(
+        createdAt = 1234567890L,
+        activities = listOf(testActivity),
+        activityTags = listOf(backupTags),
+        closedChannels = listOf(backupClosedChannel),
+    )
+
     private suspend fun stubHardwareTagLookup(activity: Activity.Onchain) {
         whenever { coreService.activity.getAllActivitiesTags() }
             .thenReturn(listOf(ActivityTags(HARDWARE_WALLET_ID, "hw-activity", listOf("cold"))))
diff --git a/changelog.d/next/1171.fixed.md b/changelog.d/next/1171.fixed.md
new file mode 100644
index 000000000..8950948a3
--- /dev/null
+++ b/changelog.d/next/1171.fixed.md
@@ -0,0 +1 @@
+Restoring an activity backup no longer discards valid activities or closed channels when a single tag cannot be applied.