diff --git a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/BackupConfigView.java b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/BackupConfigView.java
index 8d4cec4bf..14c5a54a3 100644
--- a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/BackupConfigView.java
+++ b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/BackupConfigView.java
@@ -148,9 +148,9 @@ public class BackupConfigView extends LinearLayout
             ? R.string.archive_button_store : R.string.archive_button_load;
     }
 
-    public List<SaveWhat> getSaveWhat()
+    public ArrayList<SaveWhat> getSaveWhat()
     {
-        List<SaveWhat> result = new ArrayList<>();
+        ArrayList<SaveWhat> result = new ArrayList<>();
         for ( SaveWhat what : mCheckBoxes.keySet() ) {
             CheckBox box = mCheckBoxes.get( what );
             if ( box.isChecked() ) {
diff --git a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DlgDelegate.java b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DlgDelegate.java
index 90eb520b0..0be018806 100644
--- a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DlgDelegate.java
+++ b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/DlgDelegate.java
@@ -58,6 +58,7 @@ public class DlgDelegate {
         SEND_LOGS,
         OPEN_BYOD_DICT,
         CLEAR_INT_STATS,        // debug only
+        BACKUP_OVERWRITE,
 
         // BoardDelegate
         UNDO_LAST_ACTION,
diff --git a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/GamesListDelegate.java b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/GamesListDelegate.java
index 2d8bc72b8..c1a14f51c 100644
--- a/xwords4/android/app/src/main/java/org/eehouse/android/xw4/GamesListDelegate.java
+++ b/xwords4/android/app/src/main/java/org/eehouse/android/xw4/GamesListDelegate.java
@@ -1474,6 +1474,14 @@ public class GamesListDelegate extends ListDelegateBase
             openWithChecks( rowid, summary );
             break;
 
+        case BACKUP_OVERWRITE:
+            ArrayList<SaveWhat> whats = (ArrayList<SaveWhat>)params[0];
+            Uri uri = Uri.parse((String)params[1]);
+            if ( ZipUtils.load( m_activity, uri, whats ) ) {
+                ProcessPhoenix.triggerRebirth( m_activity );
+            }
+            break;
+
         case QUARANTINE_DELETE:
             deleteIfConfirmed( new long[] {(long)params[0]}, true );
             break;
@@ -1567,10 +1575,11 @@ public class GamesListDelegate extends ListDelegateBase
                         if ( null == uri ) { // store case
                             startFileChooser( view.getSaveWhat() );
                         } else {
-                            List<ZipUtils.SaveWhat> what = view.getSaveWhat();
-                            if ( ZipUtils.load( m_activity, uri, what ) ) {
-                                ProcessPhoenix.triggerRebirth( m_activity );
-                            }
+                            ArrayList<SaveWhat> what = view.getSaveWhat();
+                            makeConfirmThenBuilder( R.string.backup_overwrite_confirm,
+                                                    Action.BACKUP_OVERWRITE )
+                                .setParams(what, uri.toString())
+                                .show();
                         }
                     }
                 } )
@@ -1581,7 +1590,7 @@ public class GamesListDelegate extends ListDelegateBase
 
     // This is in liu of passing through the startActivityForResult call,
     // which apparently isn't supported.
-    private List<ZipUtils.SaveWhat> mSaveWhat;
+    private List<SaveWhat> mSaveWhat;
 
     private void startFileChooser( List<SaveWhat> what )
     {
diff --git a/xwords4/android/app/src/main/res/values/tmpstrings.xml b/xwords4/android/app/src/main/res/values/tmpstrings.xml
index d5464dc53..d19cdefca 100644
--- a/xwords4/android/app/src/main/res/values/tmpstrings.xml
+++ b/xwords4/android/app/src/main/res/values/tmpstrings.xml
@@ -24,5 +24,11 @@
   identify your device. Use this to migrate CrossWords to a new
   device.</string>
 
+  <string name="backup_overwrite_confirm">Are you sure you want to
+  overwrite CrossWords\'s current games or settings with those from
+  the file you selected?\n\nPlease note that if you are bringing
+  networked games over from another device (migrating, that is), you
+  should not continue to use CrossWords on the old device.</string>
+
   <string name="archive_filename_fmt">CrossWords-backup-%1$s.zip</string>
 </resources>