Index: trunk/src/org/openstreetmap/josm/gui/io/BasicUploadSettingsPanel.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/io/BasicUploadSettingsPanel.java	(revision 7037)
+++ trunk/src/org/openstreetmap/josm/gui/io/BasicUploadSettingsPanel.java	(revision 7039)
@@ -75,4 +75,6 @@
                 if (HyperlinkEvent.EventType.ACTIVATED.equals(e.getEventType())) {
                     hcbUploadSource.setText(Main.map.mapView.getLayerInformationForSourceTag());
+                    // Fix #9965
+                    changesetSourceModel.setComment(hcbUploadSource.getText());
                 }
             }