[Observium] Moving Observium

So I have my new CentOS7 system ready to go, moving from a CentOS6 VM. I thought I'd found it before, but I can't find instructions for moving observium to a different system (same x86_64 architecture). I can move the RRDs, but isn't there more to it, like migrating mysql data?

I've looked through the documentation. Perhaps I'm just looking for the wrong text. Any links someone can point to, or instructions for moving from one host to another?

Thanks.

Bill