I'm no kind of expert either, but there might be something that you could try...
1. While making a profile of an ordinary amp, split the signal coming out of the kemper and record that signal directly. I say "make a profile of an ordinary amp", because otherwise the profiler might stop the process if it doesn't hear anything (can't confirm this, just supposing).
2. Once the profiling process has finished, take your recording of the 'ufo' profiling sounds and feed it into the kemper, recording the results (in mono I'd guess).
3. Finally, start the profiling process again, but this time play the results of the recording made in step 2 and feed it back to the kemper, as you would a signal from a mic or an amp's line out.
I'd guess that success would depend on how accurate you'd have to be with the timing of starting playback in step 3. Also, I think I remember reading something about problems profiling amps when noise gates were enabled (but not 100% sure) so you might need to disable kemper's noise gate when attempting.
Anyway, I've never tried this, so you could be doing a world-first here. Best of luck!