diff --git a/app/src/androidTest/java/com/todoroo/astrid/dao/TaskDaoTests.kt b/app/src/androidTest/java/com/todoroo/astrid/dao/TaskDaoTests.kt
index 18715049f..cefb4ea39 100644
--- a/app/src/androidTest/java/com/todoroo/astrid/dao/TaskDaoTests.kt
+++ b/app/src/androidTest/java/com/todoroo/astrid/dao/TaskDaoTests.kt
@@ -144,7 +144,7 @@ class TaskDaoTests : InjectingTestCase() {
     fun findChildrenInList() {
         taskDao.createNew(newTask(with(ID, 1L)))
         taskDao.createNew(newTask(with(ID, 2L), with(PARENT, 1L)))
-        assertEquals(listOf(2L), taskDao.findChildrenInList(listOf(1, 2)))
+        assertEquals(listOf(2L), taskDao.getChildren(listOf(1L, 2L)))
     }
 
     @Test
@@ -152,7 +152,7 @@ class TaskDaoTests : InjectingTestCase() {
         taskDao.createNew(newTask(with(ID, 1L)))
         taskDao.createNew(newTask(with(ID, 2L), with(PARENT, 1L)))
         taskDao.createNew(newTask(with(ID, 3L), with(PARENT, 2L)))
-        assertEquals(listOf(2L, 3L), taskDao.findChildrenInList(listOf(1, 2, 3)))
+        assertEquals(listOf(2L, 3L, 3L), taskDao.getChildren(listOf(1L, 2L, 3L)))
     }
 
     @Test
@@ -160,7 +160,7 @@ class TaskDaoTests : InjectingTestCase() {
         taskDao.createNew(newTask(with(ID, 1L)))
         taskDao.createNew(newTask(with(ID, 2L), with(PARENT, 1L)))
         taskDao.createNew(newTask(with(ID, 3L), with(PARENT, 2L)))
-        assertEquals(listOf(3L), taskDao.findChildrenInList(listOf(1, 3)))
+        assertEquals(listOf(2L, 3L), taskDao.getChildren(listOf(1L, 3L)))
     }
 
     override fun inject(component: TestComponent) = component.inject(this)
diff --git a/app/src/androidTest/java/org/tasks/data/GoogleTaskDaoTests.kt b/app/src/androidTest/java/org/tasks/data/GoogleTaskDaoTests.kt
index 9d37ed936..5a6bdac85 100644
--- a/app/src/androidTest/java/org/tasks/data/GoogleTaskDaoTests.kt
+++ b/app/src/androidTest/java/org/tasks/data/GoogleTaskDaoTests.kt
@@ -150,7 +150,7 @@ class GoogleTaskDaoTests : InjectingTestCase() {
     fun findChildrenInList() {
         googleTaskDao.insert(newGoogleTask(with(TASK, 1), with(LIST, "1")))
         googleTaskDao.insert(newGoogleTask(with(TASK, 2), with(LIST, "1"), with(PARENT, 1L)))
-        assertEquals(listOf(2L), googleTaskDao.findChildrenInList(listOf(1, 2)))
+        assertEquals(listOf(2L), googleTaskDao.getChildren(listOf(1L, 2L)))
     }
 
     private fun insertTop(googleTask: GoogleTask) {
diff --git a/app/src/main/java/com/todoroo/astrid/dao/TaskDao.kt b/app/src/main/java/com/todoroo/astrid/dao/TaskDao.kt
index 49e4528c1..b3257b040 100644
--- a/app/src/main/java/com/todoroo/astrid/dao/TaskDao.kt
+++ b/app/src/main/java/com/todoroo/astrid/dao/TaskDao.kt
@@ -29,7 +29,6 @@ import org.tasks.jobs.WorkManager
 import org.tasks.preferences.Preferences
 import org.tasks.time.DateTimeUtils.currentTimeMillis
 import timber.log.Timber
-import java.util.*
 
 @Dao
 abstract class TaskDao(private val database: Database) {
@@ -194,12 +193,6 @@ abstract class TaskDao(private val database: Database) {
             + "SELECT task FROM recursive_tasks")
     abstract fun getChildren(ids: List<Long>): List<Long>
 
-    fun findChildrenInList(ids: List<Long>): List<Long> {
-        val result = ArrayList(ids)
-        result.retainAll(getChildren(ids))
-        return result
-    }
-
     @Query("UPDATE tasks SET collapsed = :collapsed WHERE _id = :id")
     abstract fun setCollapsed(id: Long, collapsed: Boolean)
 
diff --git a/app/src/main/java/com/todoroo/astrid/service/TaskMover.kt b/app/src/main/java/com/todoroo/astrid/service/TaskMover.kt
index f0b060173..9eab1acae 100644
--- a/app/src/main/java/com/todoroo/astrid/service/TaskMover.kt
+++ b/app/src/main/java/com/todoroo/astrid/service/TaskMover.kt
@@ -10,6 +10,7 @@ import com.todoroo.astrid.data.Task
 import org.tasks.BuildConfig
 import org.tasks.LocalBroadcastManager
 import org.tasks.data.*
+import org.tasks.db.DbUtilsKt.dbchunk
 import org.tasks.injection.ForApplication
 import org.tasks.preferences.Preferences
 import java.util.*
@@ -39,11 +40,12 @@ class TaskMover @Inject constructor(
         return null
     }
 
-    fun move(tasks: List<Long>, selectedList: Filter) {
-        var tasks = tasks
-        tasks = ArrayList(tasks)
-        tasks.removeAll(googleTaskDao.findChildrenInList(tasks))
-        tasks.removeAll(taskDao.findChildrenInList(tasks))
+    fun move(ids: List<Long>, selectedList: Filter) {
+        val tasks = ArrayList(ids)
+        ids.dbchunk().forEach {
+            tasks.removeAll(googleTaskDao.getChildren(it))
+            tasks.removeAll(taskDao.getChildren(it))
+        }
         taskDao.setParent(0, tasks)
         for (task in taskDao.fetch(tasks)) {
             performMove(task, selectedList)
diff --git a/app/src/main/java/org/tasks/data/GoogleTaskDao.kt b/app/src/main/java/org/tasks/data/GoogleTaskDao.kt
index 871efa995..0f1a69da6 100644
--- a/app/src/main/java/org/tasks/data/GoogleTaskDao.kt
+++ b/app/src/main/java/org/tasks/data/GoogleTaskDao.kt
@@ -88,15 +88,12 @@ abstract class GoogleTaskDao {
     @Query("SELECT DISTINCT gt_list_id FROM google_tasks WHERE gt_deleted = 0 AND gt_task IN (:tasks)")
     abstract fun getLists(tasks: List<Long>): List<String>
 
-    @Query("SELECT gt_task FROM google_tasks WHERE gt_parent IN (:ids)")
+    @Query("SELECT gt_task FROM google_tasks WHERE gt_parent IN (:ids) AND gt_deleted = 0")
     abstract fun getChildren(ids: List<Long>): List<Long>
 
     @Query("SELECT tasks.* FROM tasks JOIN google_tasks ON tasks._id = gt_task WHERE gt_parent = :taskId")
     abstract fun getChildTasks(taskId: Long): List<Task>
 
-    @Query("SELECT gt_task FROM google_tasks WHERE gt_task IN (:taskIds) AND gt_parent IN (:taskIds) AND gt_deleted = 0")
-    abstract fun findChildrenInList(taskIds: List<Long>): List<Long>
-
     @Query("SELECT * FROM google_tasks WHERE gt_parent = :id AND gt_deleted = 0")
     abstract fun getChildren(id: Long): List<GoogleTask>