Hi Richard,
I found out that SimUpdate 3 (beta 1.5.8.0) was messing it.
Actually, I found that all airports inside terminal areas, like SBSP, SBMT were without APP freqs. Only the major airport, like SBGR for Sao Paulo, have the correct app frequencies like it was mentioned here before: SBSP / SBMT Sao Paulo App Frequencies not in the sim
The same happens to SBCX, which is inside SBPA terminal area. SBPA have the frequencies, and the other airports inside that terminal do not.
I disable the beta test and run it with current A version, and all frequencies came back.