Quote Originally Posted by Chewie71 View Post
zmpurgeoldmbox doesn't help

I wrote a script several months ago after a bad outage. It fixes disconnected blobs. I just have to run that every time I move an account to the new servers and it seems to be working fine.

I guess there was a problem with zmmboxmove and HSM volumes:

which is supposed to be fixed in 7.2.4 and 8.0.4.

Alternatively, you may be able to use zmmailboxmove --force instead of zmmboxmove.