Database group of most databases belong to the same user


I noticed today when I go to var/lib/mysql that the GROUP user of most of the databases belong to the same user. The exception is recently created Virtual Servers.

I suspect it happened when I renamed a domain a few months ago because the particular user is that of the renamed virtual server’s user.

I have tried Limits & Validation > Validate Virtual Servers > Fix Permissions for a single domain only, but this did not change the GROUP user.

Is there another way to resolve this? Would it be safe to manually change the GROUP user for each database?