Index: midi_region_view.cc
===================================================================
--- midi_region_view.cc (revision 11419)
+++ midi_region_view.cc (working copy)
@@ -3251,7 +3251,7 @@
                DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("Paste extended region from %1 to %2\n", region_end, end_frame));
 
                _region->clear_changes ();
-               _region->set_length (end_frame);
+               _region->set_length (end_frame - _region->position());
                trackview.session()->add_command (new StatefulDiffCommand (_region));
        }