Ahhhhhh! So simple and I'm so stupid. I took the much longer way of restoring a backup, pulling the PId out of the Ce registry. Interestingly, it did not work. I was still prompted by AS 3.8 to make a new partnership. I don't know why it did that, unless it had already decided the Mobilon was a new machine
(since I had tried to synch it without the PId
) and it no longer cared about the old PId.
So then I had to build a new partnership anyway. The whole thing only took about about 3 hours, no problem
The good news is no doubled-contacts or weird appointment settings, problems I often find in a restore, even when setting AS to "replace items on the device."
Still wonder why AS 3.1 deleted the partnership to begin with--even AS 3.1 seems quite amenable to a HPC with two partnerships.
At any rate, up and running, and thanks for the help,
Jake