Welcome to the Centrify forums.
Note that we provide our own IDMapper (adbindproxy) that allows samba resolve UNIX identity data supplied by our client.
Not being a samba expert, I can't tell you what's wrong with it (or why it's in use in your configuration), however I do know that if the system was running adbindproxy in a different domain before, it has to be re-configured.
Did you re-run the adbindproxy.pl script after moving to a new domain?
ref: https://community.centrify.com/t5/TechBlog/Server-Suite-2016-Samba-with-adbindproxy/ba-p/24052
R.P