I went through an upgrade from VeraLite to VeraEdge yesterday. All went pretty well.
In testing, I found my Routines were not working. It seems that when you Forget devices, all linkages to the device are lost and any routines using that device still exists (and says OK) but there is noting to do (i.e. device is gone). When you think about it, this makes sense.
So you have to go back in to all your Routines and add the device action again.
No biggie, but would hate to do that often.
Bob