I've been a software engineer for almost 25 years and sometimes, when testing, you have to try some things that are not typical. I know when I was developing & testing software during my Air Force career, not only would I test it to make sure it did what is was supposed to (functionally correct), but also try to break it (correct behavior). My coworkers knew if they started hearing a maniacal laugh coming out of my cubicle, then I was really trying to break the system (sometimes with some spectacular results)!
So, I was able to go out via my Ancestry account and make some changes online (only online). The sync worked just fine. I'm going to make some local changes in FTM 2014 later tonight and see if the sync is still working. So far, I'm not having any problems but admit it is a rather limited experiment at the moment. I figured I had nothing to lose. Everything I had is backed up multiple times (and I've tested the restore function in FTM -- it works as advertised).