Yes for the Jeep. I tried to "move" to Port A, as we had gotten a PO box for our months here, and I had my title in hand. But I could not show a DL or real address, on the island, so I couldn't just re-title it here.
What my home county said to do was, in writing, tell them I was out of town, and to send my fees and proof of insurance, and a request they send the paperwork to me on the island. 10 days later the paperwork arrived in my PO box.
Maybe I fell into the example of timing of the old inspection and registration dates? I really did not want to push them, as they said, send it very quickly, and so I did ASAP.
My motorhome is my next issue, due in April. We will just delay doing the home car, in the garage, that one will be 3 months past do by the time we are home for Drs.