Two problems after upgrading. 8.0 incorrectly upgraded my 7.8 file.
On a 6 Key Keypad switch on the main switch it added an additional light to control.
The other problem was that the system failed to transfer one of my rooms. It was not out of range and has always worked every time I have upgraded (7.0 - 7.8)
The solution was to manually deactivate each of the 3 switches (2 regular switches and 1 6 key switch) and then reactivate. This fixed the issue.