diff --git a/experiment/src/org/labkey/experiment/controllers/exp/ExperimentController.java b/experiment/src/org/labkey/experiment/controllers/exp/ExperimentController.java
index d3865df1c1e..52e4f0d9bbd 100644
--- a/experiment/src/org/labkey/experiment/controllers/exp/ExperimentController.java
+++ b/experiment/src/org/labkey/experiment/controllers/exp/ExperimentController.java
@@ -3937,8 +3937,14 @@ public ModelAndView getView(DeleteForm deleteForm, boolean reshow, BindException
 
             List<ExpData> datas = getDatas(deleteForm, false);
             List<ExpRun> runs = getRuns(datas);
+            ConfirmDeleteView view = new ConfirmDeleteView("Data", ShowDataAction.class, datas, deleteForm, runs);
 
-            return new ConfirmDeleteView("Data", ShowDataAction.class, datas, deleteForm, runs);
+            // GitHub Issue #1446: show ConfirmDeleteView with a message indicating if not all of the ids resolve within the container context
+            int unresolved = deleteForm.getIds(false).size() - datas.size();
+            if (unresolved == 0)
+                return view;
+
+            return new VBox(new HtmlView(DIV(unresolved + " of the selected items could not be found in this folder.")), view);
         }
 
         private List<ExpRun> getRuns(List<ExpData> datas)
@@ -3953,7 +3959,8 @@ private List<ExpData> getDatas(DeleteForm deleteForm, boolean clear)
             for (long dataId : deleteForm.getIds(clear))
             {
                 ExpData data = ExperimentService.get().getExpData(dataId);
-                if (data != null)
+                // GitHub Issue #1446: deleteObjects() only deletes within getContainer(), so don't resolve data from other folders
+                if (data != null && data.getContainer().equals(getContainer()))
                 {
                     datas.add(data);
                 }