How to resolve:
Here is final word on this. First of all, if you need to switch out your Verizon iPad for any reason, make sure they take your SIM card out of the unit and replace in new one. If for some reason you don't do this and have to call Verizon to transfer your prepaid data plan to the new unit, make sure they try to find your prepaid account with the email address account you used to set up plan. After spending an hour talking to 3 different reps in different departments who in roundabout ways were trying unsuccessfully to locate my account, my AT&T iPhone dropped the call🙄 just as i felt we were making some headway. Frustrated, I called back, got a different agent, she asked for the email address, and BINGO, the plan was smoothly transferred in about 2 minutes. Here's the direct number for this dept. if anyone needs it: 800-786-8619. Hope this helps someone else avoid my snafu!🙂