With the recent release of Priority schemes, we've done some cleaning up and I am trying to remove the final project from a priority scheme that needs to be deleted. When trying to remove it I get an error message "We couldn't update the scheme. Refresh the page and try again".

The project seems to be in multiple priority schemes which shouldn't be the case. Every time I try to make any changes to the priority scheme of this particular project, I get the same error above. This is the only project that it is happening with. It is a Service Management project.