Another bug with new scheduling when swapping a/c

I found another bug with the new scheduling page. Sorry, I was looking to add it to the old report as it's similar, I guess, but I can't find it.

When moving a schedule from one a/c to another identical one I get this:  It's as if the destination a/c is unsuitable due to size (like moving from a 'Large' to a 'Very Large' when the airport doesn't accept that size) but that's not the case.  The aircraft are identical and the move works fine using the old scheduling page.