expression maps

I’m having a problem with expression maps.

Let’s say I map note A-1 to C3. When I hit the key the signal gets to the instrument. But when i recall the song I find that the MIDI not was not recorded.

In other words the signal gets through to the instrument but the actual MIDi not does not record so that i can call that articulation up at a later date. I noticed that the aftertouch recorded but not the note.

If maybe I’m doing something wrong or there’s a workaround I would like to know.