While using Scaler v2.11 on Windows 10 64-bit in Reaper, the following happened:
The last chord in pattern1 (consisting of 8 chords) changed from E dim #5/C to C7 after saving and reloading a Chordset. The same happens when saving the project in Reaper v6.11 64-bit and reloading it.
After 8th chord changed: