Has anyone ever had this issue before?

Has anyone ever had the following issue before? I set up three performances: P1- Voxac30, Diezel vh4, Peavy5150. P2- Bogner XTC, Bogner Uberschall. P3- Blackstar S1, Driftwood Purple Nightmare. I used an FCB with the UNO for Kemper chip as the controller. After switching through the performances for some time, the amps in performance 1 mixed and they all changed to the peavy 5150.

No, not locked. I stored the performances though.

I am not sure how to reproduce the issue again, but the issue has not gone away. I cannot change the amp in any of the Performance 1 positions. I will try plugging it into rig manager, deleting all performances,and then remake the performance.

The sound changed as well. Every sound changed to the raw sound of the 5150. I spoke to Kemper Support and they sorted it out.

I have not figured out how to make a performance on RM. I will try that later today.

I am using my Kemper rack mount through a Marshall 20/20 EL84 power amp and then into 2 Marshall cabs, one with greenbacks, and the other with v30's. I held in the "cabinet" button and turned off the cabinet simulation and locked it. Apparently in one or two cases, this can cause a glitch in the 3.3.0 public beta. I turned cabinet simulation back on and then with the individual amps I was using, turned the simulation off. This solved the problem. This glitch will be fixed in 4.0, as the Kemper Support guy told me.

It seems so, yes. Well,that, and removing all performances in Rig Manager, and then turning the Kemper off and on to browser while holding the 'rig' button for 30 seconds. Made the performances again and now I have no problem.