Ok, This thread scared me a little bit, as the 4 EHD's I have, started with my original ViP622. I moved to a Hopper with no issues, and have just now moved to a H3. Haven't had to do anything to the EHD's, but was worried about having to restore from a backup, if the H3 wouldn't then work with the recordings. Just did a restore to backup system to one of the EHD's and no issues. Wish the thread starter best of luck, glad restoring files from 3 years ago, still works.