Hi @bschleiger,
Welcome to the community. I’ve moved your topic here from the 7.9 announcement, since it has a higher affinity with this topic.
The OP in this thread includes this:
So to answer your question, you can migrate DBs on 6.7, then jump to 7.9(.1) or you can move to 7.8 on MySQL, migrate DBs, and then upgrade to 7.9.1. Since there are fewer steps in the first scenario it seems like it would be easiest to handle the DB upgrade first.
HTH,
Ann