I have certainly seen the rental restriction on the Change of Guest Name Form, although not with the multiple Priority Period references.The Exchange Procedures were linked as part of the enrollment process when enrolling weeks. I suspect it is also provided when one buys Club Points direct from MVC. They are also available on the MVC owner website. The Exchange Procedures are a pretty dry read though... The rental restriction is also called out when using the new form to change a guest name.
And as my enrolment documentation dates right back to 2010, I may well just have forgotten what was in it way back then.
I guess I had better check back through my records?