Jamf Now to Jamf Pro

I’m looking to switch our organization from Jamf Now to Jamf Pro, we have about 200 devices (iPads). From my understanding we’ll need to erase every device and setup as new on Pro. Is this information correct, or are there other options? I’ll be the main point of contact in assisting transitioning devices over. These devices are in the field using AT&T cellular, as you can assume, the transition will take a while. Any help would greatly be appreciated.