So some of these missing parameter saves are bugs being worked on by Ron.
The ones I know of:
Individual hue parameters for each oscillator (master hue seems to save?)
Drift / Y offset parameters
Self mods and some other parameters resetting when adjusting another parameter (forget exactly what one’s so my bad not detailing this)
Another part I know that causes an issue in regards to feedback:
Loading a saved patch or turning on the unit while a patch cable is plugged into feedback cv input. If it is set and saved for master hue modulation instead this doesn’t happen, but if it is set to feedback then when you load up the patch / turn the unit on, it creates some type of permanent offset that applies to every patch loaded thereafter.
I’m really looking forward to the release of new firmware to address these bugs. Until then you just gotta work around them!