Copying SVG between scores not working

The manual says, "Copying imported images:
Once an image has been imported into the score it can be copied/cut and pasted to another location, such as a frame, note or rest, using the standard commands and procedure (see Copy and paste)."

This works perfectly within one score, however I lose the images when I copy and paste between scores. There are place holders (see attached) in the proper positions, but images aren't there.

Is this expected behavior?