Index: applications/editors/josm/plugins/reverter/build.xml
===================================================================
--- applications/editors/josm/plugins/reverter/build.xml	(revision 29356)
+++ applications/editors/josm/plugins/reverter/build.xml	(revision 29359)
@@ -4,5 +4,5 @@
     <property name="commit.message" value="Reverter: Update MultiOsmReader to support null data after redaction"/>
     <!-- enter the *lowest* JOSM version this plugin is currently compatible with -->
-    <property name="plugin.main.version" value="5765"/>
+    <property name="plugin.main.version" value="5775"/>
 
     <!-- Configure these properties (replace "..." accordingly).
Index: applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetTask.java
===================================================================
--- applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetTask.java	(revision 29356)
+++ applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetTask.java	(revision 29359)
@@ -9,4 +9,5 @@
 import org.openstreetmap.josm.Main;
 import org.openstreetmap.josm.command.Command;
+import org.openstreetmap.josm.command.ConflictAddCommand;
 import org.openstreetmap.josm.gui.PleaseWaitRunnable;
 import org.openstreetmap.josm.gui.progress.PleaseWaitProgressMonitor;
@@ -87,8 +88,18 @@
         final Command cmd = new RevertChangesetCommand(tr(revertType == RevertType.FULL ? "Revert changeset #{0}" :
                 "Partially revert changeset #{0}",changesetId),cmds);
+        int n = 0;
+        for (Command c : cmds) {
+            if (c instanceof ConflictAddCommand) {
+                n++;
+            }
+        }
+        final int newConflicts = n;
         GuiHelper.runInEDT(new Runnable() {
             @Override
             public void run() {
                 Main.main.undoRedo.add(cmd);
+                if (newConflicts > 0) {
+                    Main.map.conflictDialog.warnNumNewConflicts(newConflicts);
+                }
             }
         });