Error when Moving a Board

I have gone to move a board today and have encountered the error “Sorry for the inconvenience, we couldn’t move 1 item”. I have checked and all the items match between the boards, so I am not sure why this is happening all of a sudden. I have noticed there are new steps to do this function that weren’t there previously and since the change I haven’t been able to move any boards across to where I need them!
Anyone have any ideas??