I've recently experienced a few different scenarios regarding Organizations migrating to a new domain while having MDE deployed, where the drives are encrypted, and the users are actively authenticating at the PBA. The common denominator is that all said there wasn't anything published to describe the process and what they could expect. I've attached a document I created to use for these type of instances. It's considered a high level approach to understanding the implications. Please share your experience surrounding this type of "request for assistance".