I don’t think it’s clear at all how to handle a case like that. I have a similar situation. In SC where my original charge occured, I’m subject to lifetime. Additionally, SC recently did away with Tier 1. They simply moved all tier 1s up to Tier 2. It’s crazy.
I now live in NC and have about 4 years before I’m eligible to petition for removal in NC. Assuming that could happen, then does SC stay valid for life? And, then there is the National database…I have no idea if there is even a procedure. It’s an endless riddle. Let me know if you find anything that clears it up.