diff --git a/libraries/lib-track/PendingTracks.cpp b/libraries/lib-track/PendingTracks.cpp
index e115d3ea3c48..df6b6c6ef73f 100644
--- a/libraries/lib-track/PendingTracks.cpp
+++ b/libraries/lib-track/PendingTracks.cpp
@@ -51,7 +51,7 @@ PendingTracks::~PendingTracks() = default;
 
 void PendingTracks::RegisterPendingNewTracks(TrackList &&list)
 {
-   mTracks.RegisterPendingNewTracks(std::move(list));
+   mTracks.Append(std::move(list), false);
 }
 
 namespace {
diff --git a/libraries/lib-track/Track.cpp b/libraries/lib-track/Track.cpp
index b88f04fac2ff..9cdb941a2aaa 100644
--- a/libraries/lib-track/Track.cpp
+++ b/libraries/lib-track/Track.cpp
@@ -605,7 +605,7 @@ Track *TrackList::DoAddToHead(const std::shared_ptr<Track> &t)
    return front().get();
 }
 
-Track *TrackList::DoAdd(const std::shared_ptr<Track> &t)
+Track *TrackList::DoAdd(const std::shared_ptr<Track> &t, bool assignIds)
 {
    if (!ListOfTracks::empty()) {
       auto &pLast = *ListOfTracks::rbegin();
@@ -624,7 +624,7 @@ Track *TrackList::DoAdd(const std::shared_ptr<Track> &t)
    auto n = getPrev( getEnd() );
 
    t->SetOwner(shared_from_this(), n);
-   if (mAssignsIds)
+   if (mAssignsIds && assignIds)
       t->SetId(TrackId{ ++sCounter });
    RecalcPositions(n);
    AdditionEvent(n);
@@ -1316,24 +1316,14 @@ TrackListHolder TrackList::Temporary(AudacityProject *pProject,
    return tempList;
 }
 
-void TrackList::Append(TrackList &&list)
+void TrackList::Append(TrackList &&list, bool assignIds)
 {
    auto iter = list.ListOfTracks::begin(),
       end = list.ListOfTracks::end();
    while (iter != end) {
       auto pTrack = *iter;
       iter = list.erase(iter);
-      this->Add(pTrack);
-   }
-}
-
-void TrackList::RegisterPendingNewTracks(TrackList&& list)
-{
-   for(auto it = list.ListOfTracks::begin(); it != list.ListOfTracks::end();)
-   {
-      Add(*it);
-      (*it)->SetId({});
-      it = list.erase(it);
+      this->Add(pTrack, assignIds);
    }
 }
 
diff --git a/libraries/lib-track/Track.h b/libraries/lib-track/Track.h
index 453b23b6fb6f..88775801e649 100644
--- a/libraries/lib-track/Track.h
+++ b/libraries/lib-track/Track.h
@@ -1118,7 +1118,7 @@ class TRACK_API TrackList final
 
 private:
    Track *DoAddToHead(const std::shared_ptr<Track> &t);
-   Track *DoAdd(const std::shared_ptr<Track> &t);
+   Track *DoAdd(const std::shared_ptr<Track> &t, bool assignIds);
 
    template< typename TrackType, typename InTrackType >
       static TrackIterRange< TrackType >
@@ -1175,14 +1175,17 @@ class TRACK_API TrackList final
 
    Track *FindById( TrackId id );
 
-   /// Add a Track, giving it a fresh id
+   /// Add a Track, giving it a fresh id if `this` is not temporary
    template<typename TrackKind>
-      TrackKind *AddToHead( const std::shared_ptr< TrackKind > &t )
-         { return static_cast< TrackKind* >( DoAddToHead( t ) ); }
+      TrackKind *AddToHead( const std::shared_ptr<TrackKind> &t )
+         { return static_cast<TrackKind*>(DoAddToHead(t)); }
 
+   /// Add a Track, giving it a fresh id if `this` is not temporary and
+   /// assignIds is true
    template<typename TrackKind>
-      TrackKind *Add( const std::shared_ptr< TrackKind > &t )
-         { return static_cast< TrackKind* >( DoAdd( t ) ); }
+      TrackKind *Add(const std::shared_ptr<TrackKind> &t,
+         bool assignIds = true)
+            { return static_cast<TrackKind*>(DoAdd(t, assignIds)); }
 
    //! Removes linkage if track belongs to a group
    std::vector<Track*> UnlinkChannels(Track& track);
@@ -1280,16 +1283,11 @@ class TRACK_API TrackList final
    }
 
    //! Remove all tracks from `list` and put them at the end of `this`
-   void Append(TrackList &&list);
-
-   // Like RegisterPendingChangedTrack, but for a list of new tracks,
-   // not a replacement track.  Caller
-   // supplies the list, and there are no updates.
-   // Pending tracks will have an unassigned TrackId.
-   // Pending new tracks WILL occur in iterations, always after actual
-   // tracks, and in the sequence that they were added.  They can be
-   // distinguished from actual tracks by TrackId.
-   void RegisterPendingNewTracks(TrackList &&list);
+   /*!
+    @param assignIds ignored if `this` is a temporary list; else if false,
+    suppresses TrackId assignment
+    */
+   void Append(TrackList &&list, bool assignIds = true);
 
    //! Remove first channel group (if any) from `list` and put it at the end of
    //! `this`