Is there a way to change form's ClassLibrary property?

Suppose I want to change the name of a class library or perhaps move a form class from one library to another. How do I make forms based on the class follow their leader?

Or suppose I have formA based on formclassA and I have a local copy of formclassA in which I try out a few new things and I want to see if they break anything in formA. The R/O-ness of formA.ClassLib prevents me from making a local copy of formA and hooking it to my local formA.

Now I know what I'm asking for might be dangerous, and go against all of the wise edicts of OOP gurus everywhere...but still, I'd like to do it.

Can I?