To answer a question like that, I think a simple example would suffice. Let's use the hypothetical case that a repeal of the 17th amendment is passed.
If you were a sitting Senator from a state that has chosen to send someone else in your place, what do you do? Do you refuse to vacate your office because you are used to ignoring the Constitution when it suits you?
Can you seriously envision a case where a sitting member of government refuses to abide by the results of newly passed Constitutional amendments?
-PJ
Sure I can. His party sues in the Supreme Court and he’s seated until the resulting Constitutional issues are resolved. That might take awhile if it is intended to take awhile.