Strange thing happened to me when upgrading my vMix 4K from 27 to 28.0.0.43: all my shortcuts disappeared. My shortcuts were used for my streamdeck and they all disappeared. What's even stranger is when I tried to load up different versions of my save file (we make a copy after each broadcast) none of the shortcuts were recovered.
I was able to recover a very old copy from an export from a year ago but had to recreate the ties to my Streamdeck.

Has anyone else had this issue? I'm going to try to recreate the problem on another copy of vMix that I have at another client site.