diff --git a/libs/ardour/playlist.cc b/libs/ardour/playlist.cc
index 1242b6800a..a9a1d18adf 100644
--- a/libs/ardour/playlist.cc
+++ b/libs/ardour/playlist.cc
@@ -699,10 +699,8 @@ Playlist::add_region (boost::shared_ptr<Region> region, samplepos_t position, fl
 	samplepos_t pos = position;
 
 	if (times == 1 && auto_partition) {
-		RegionList thawlist;
 		partition_internal (pos - 1, (pos + region->length ()), true, rlock.thawlist);
-		for (RegionList::iterator i = thawlist.begin (); i != thawlist.end (); ++i) {
-			(*i)->resume_property_changes ();
+		for (RegionList::iterator i = rlock.thawlist.begin (); i != rlock.thawlist.end (); ++i) {
 			_session.add_command (new StatefulDiffCommand (*i));
 		}
 	}
diff --git a/libs/pbd/pbd/properties.h b/libs/pbd/pbd/properties.h
index 02b3320624..d4b5f64aea 100644
--- a/libs/pbd/pbd/properties.h
+++ b/libs/pbd/pbd/properties.h
@@ -405,9 +405,10 @@ public:
 	}
 
 	bool changed () const {
-		/* Expensive, but, hey; this requires operator!= in
-		   our T
-		*/
+		if (!_old) {
+			return false;
+		}
+		/* Expensive, but, hey; this requires operator!= in our T */
 		return (*_old != *_current);
 	}