Thanks for the replies: I've uploaded a patch to Exchange called: "LOST-CONTROLLERS-ONL-PWRCYCL". At time of export this is a patch that loses scene controller values in my case (AxeII-Mk1). The scene controller values I set are: Scene 1: 1-0%, 2-100%, 3-0%, 4-50%, 5-0%, 6-100%, 7-0%, 8-50%
There's no tone match blocks in the patch, and I've been making sure they are saved by switching to other patches with different values and back, then making sure scene control values are correct. I've also done this without AE to see if that might have been the issue.
Try the patch if you have time and see what happens: Load up the patch, confirm that you see the scene controller values (or put them in as above if they did not load on import). Then power cycle and see if they are still there.
If you get the problem, then take out the modifier in the "Send" block (level), and also take out the one in the "reverb" block (hold), and see if your scene controller values still get lost after power cycle (mine do not get lost after removing these two other modifiers which is why I though I'd hit a limit of some sort).