Sequencer Bug - Graph is linked to object in external map

Hi,
when I insert an empty actor in my scene which I use for a camera target for my camera in sequencer I get always the error message “Graph is linked to object(s) in external map…” (when I want to save my project). For this reason I am not able to save the sequence. This is really annoying.Unfortunately this problem exists since serveral years. Epic, please fix this bug.

Best regards, Andreas

This should have been fixed in 4.22, which appears to be what version you’re on. I just tried and was able to save the map and the sequence. I have a cine camera that I set a key for the Actor To Track, which points to an empty actor. Here’s the setup I have. Does yours differ?

I found a solution, but it’s very strange. I put the empty actor(which I want to use as my camera target) into the blueprint of the mesh in the world outliner.When I now put this empty actor as a track in sequencer the problem is solved. There seems to be a problem with the blueprint reference. Nevertheless this problem shouldn’t occur.