I'm pretty sure the answer to that is the same as always. Which is "Don't use a save from a previous version, unless you want bugs"
Doubly so for this change. I may add in a quick check on reset / waking up at home that tries to clean things up a little if you have an old save, but you'll have 0 combat mastery and as always there may be more bugs. All of these builds are work-in-progress, and my goal is for the 1.0 release to work and not be buggy for games started in 1.0; everything up until then I can't promise smooth transfers from one build to the next.