I don't know the answer to your question, but I'd caution you not to use the Beta software for production design.
They warn us every year not to do that, perhaps because of issues like you are asking about.
Let me backtrack just a little.
They encourage you to test in your normal production workflows so you can make sure it fits with your company BUT they strongly warn not to use on your current production files.
You can test out 2016 in your production environment with COPIES of your files.
That way you don't mess up your real stuff.
I always find that to be tricky as you have to watch like a hawk what files your assemblies open and making sure it's a copy and not one of the real current production files by accident.
Anyways, be careful! There's no guarantee of anything until they release SP0.
It's a high risk. Not all functionality in the Beta makes it to final release, or some is change considerably where the files would become troublesome.
Your response was helpful, I thought that using a beta release was questionable,
due to the continual fixes and changes that transpire during the beta phase.
I will wait for the official release.