I will ask you my standard question regarding this.
If an amendment repealing the 17th amendment were passed by the convention and ratified by the states, do you truly believe that a sitting Senator who is replaced by his home state's legislature would not "follow the rules" and refuse to vacate the seat?
Are you expecting the current ruling class to become the anarchists and refuse to accept Constitutional changes like repealing the 17th?
What would that look like? Would someone really barricade themselves in their office and refuse to leave?
-PJ
Some will follow the rules. Others, most notably liberals, would refuse. The minority ones would claim racism, and if physically removed from the office, would try to run a 'shadow government'.