diff --git a/libs/ardour/audioregion.cc b/libs/ardour/audioregion.cc
index 345fe150a9..961bf03f5c 100644
--- a/libs/ardour/audioregion.cc
+++ b/libs/ardour/audioregion.cc
@@ -1388,12 +1388,9 @@ AudioRegion::separate_by_channel (vector<boost::shared_ptr<Region> >& v) const
 		   "whole file" even if it covers the entire source file(s).
 		 */
 
-		PropertyList plist;
+		PropertyList plist (properties ());
 
-		plist.add (Properties::start, _start.val());
-		plist.add (Properties::length, _length.val());
 		plist.add (Properties::name, new_name);
-		plist.add (Properties::layer, layer ());
 		plist.add (Properties::whole_file, true);
 
 		v.push_back(RegionFactory::create (srcs, plist));
diff --git a/libs/ardour/filter.cc b/libs/ardour/filter.cc
index d930ed05bc..bc597fb87d 100644
--- a/libs/ardour/filter.cc
+++ b/libs/ardour/filter.cc
@@ -133,26 +133,13 @@ Filter::finish (boost::shared_ptr<Region> region, SourceList& nsrcs, string regi
 	}
 	results.clear ();
 
-	PropertyList plist;
+	PropertyList plist (region->properties ());
 
 	plist.add (Properties::start, std::numeric_limits<timecnt_t>::min());
-	plist.add (Properties::length, region->length());
 	plist.add (Properties::name, region_name);
 	plist.add (Properties::whole_file, true);
 
 	boost::shared_ptr<Region> r = RegionFactory::create (nsrcs, plist);
-
-	boost::shared_ptr<AudioRegion> audio_region = boost::dynamic_pointer_cast<AudioRegion> (region);
-	boost::shared_ptr<AudioRegion> audio_r = boost::dynamic_pointer_cast<AudioRegion> (r);
-	if (audio_region && audio_r) {
-		audio_r->set_position (region->position());
-		audio_r->set_scale_amplitude (audio_region->scale_amplitude());
-		audio_r->set_fade_in_active (audio_region->fade_in_active ());
-		audio_r->set_fade_in (audio_region->fade_in ());
-		audio_r->set_fade_out_active (audio_region->fade_out_active ());
-		audio_r->set_fade_out (audio_region->fade_out ());
-		*(audio_r->envelope()) = *(audio_region->envelope ());
-	}
 	results.push_back (r);
 
 	return 0;
diff --git a/libs/ardour/import.cc b/libs/ardour/import.cc
index e9f45a20b1..edb7be4df2 100644
--- a/libs/ardour/import.cc
+++ b/libs/ardour/import.cc
@@ -521,7 +521,7 @@ remove_file_source (boost::shared_ptr<Source> source)
 }
 
 void
-Session::deinterlace_midi_region ( boost::shared_ptr<MidiRegion> mr )
+Session::deinterlace_midi_region (boost::shared_ptr<MidiRegion> mr)
 {
 	typedef vector<boost::shared_ptr<Source> > Sources;
 	Sources newfiles;
@@ -580,12 +580,10 @@ Session::deinterlace_midi_region ( boost::shared_ptr<MidiRegion> mr )
 		add_source(*x);
 
 		/* create a whole-file region for this new source, so it shows up in the Source List...*/
-		PropertyList plist;
+		PropertyList plist (mr->properties ());
 		plist.add (Properties::whole_file, true);
-		plist.add (Properties::start, mr->start());
-		plist.add (Properties::length, mr->length());
 		plist.add (Properties::name, (*x)->name());
-		plist.add (Properties::tags, "(split-chans)");
+		plist.add (Properties::tags, string_compose ("%1%2%3", _("split-chans)"), mr->tags ().empty() ? "" : " ", mr->tags ()));
 		boost::shared_ptr<Region> whole = RegionFactory::create (*x, plist);
 
 		/* ... and insert a discrete copy into the playlist*/
diff --git a/libs/ardour/lua_api.cc b/libs/ardour/lua_api.cc
index e8af47d75e..d46d6dc0c8 100644
--- a/libs/ardour/lua_api.cc
+++ b/libs/ardour/lua_api.cc
@@ -1226,7 +1226,7 @@ LuaAPI::Rubberband::finalize ()
 	/* create a new region */
 	std::string region_name = RegionFactory::new_region_name (_region->name ());
 
-	PropertyList plist;
+	PropertyList plist (_region->properties ());
 	plist.add (Properties::start, 0);
 	plist.add (Properties::length, _region->length_samples ());
 	plist.add (Properties::name, region_name);
@@ -1235,16 +1235,7 @@ LuaAPI::Rubberband::finalize ()
 	boost::shared_ptr<Region>      r  = RegionFactory::create (sl, plist);
 	boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (r);
 
-	ar->set_scale_amplitude (_region->scale_amplitude ());
-	ar->set_fade_in_active (_region->fade_in_active ());
-	ar->set_fade_in (_region->fade_in ());
-	ar->set_fade_out_active (_region->fade_out_active ());
-	ar->set_fade_out (_region->fade_out ());
-	*(ar->envelope ()) = *(_region->envelope ());
-
 	ar->set_ancestral_data (timepos_t (_read_start), timecnt_t (_read_len), _stretch_ratio, _pitch_ratio);
-	ar->set_master_sources (_region->master_sources ());
-	ar->set_position (timepos_t (_region->position_sample ()));
 	ar->set_length (ar->length ().scale (_stretch_ratio)); // XXX
 	if (_stretch_ratio != 1.0) {
 		// TODO: apply mapping
diff --git a/libs/ardour/midi_region.cc b/libs/ardour/midi_region.cc
index f4afca9ddd..f290393b54 100644
--- a/libs/ardour/midi_region.cc
+++ b/libs/ardour/midi_region.cc
@@ -161,12 +161,13 @@ MidiRegion::clone (boost::shared_ptr<MidiSource> newsrc, ThawList* tl) const
 		}
 	}
 
-	PropertyList plist;
+	PropertyList plist (properties ());
 
 	plist.add (Properties::name, PBD::basename_nosuffix (newsrc->name()));
 	plist.add (Properties::whole_file, true);
-	plist.add (Properties::start, _start);
-	plist.add (Properties::length, _length);
+	plist.add (Properties::automatic, false);
+	plist.add (Properties::external, false);
+	plist.add (Properties::import, false);
 	plist.add (Properties::layer, 0);
 
 	boost::shared_ptr<MidiRegion> ret (boost::dynamic_pointer_cast<MidiRegion> (RegionFactory::create (newsrc, plist, true, tl)));