Hmmm.... not really, at least as far as I can tell.

I've been trying reward itin searches originating in MEX, PTY, and BOG and I can't pull any CM flights on a number of dates. The flights exist; but they don't show up on the reward search.

Is it possible that only some CM flights show? Looks to me like it might only be codeshares with CO. For example try a reward search to a non-US Copa destination out of PTY (e.g. PTY-BOG, PTY-MEX, PTY-GUA).

Incidentally, I have similar problems with AM international flights not originating or terminating in the US.