Blueprint Function Library 'graph linked to private object'

I have 2 blueprint function libraries that were probably created when blueprint function library support was added. Now anytime I open these files and try to make a change and save I get the error message ‘graph linked to private object’ Engine/Transient and cannot save my file. Game compiles and runs fine.

I created a new function library and it saves without issue. But I was hoping to avoid having to rebuild my functions into a new library.

And just as a note: The 3 popup windows and log window that open up during this error are very annoying!