Homematic only logging some keypresses

I have several HMIP-BROLL shutter blinds setup.
All in all it works pretty well however I now wanted to use the long press of a down button to close all the blinds.
As all my automations live in homeassistant I wanted to automate it in HA and not in the CCU (raspberrymatic).
However HA only logs SOME keypresses. For example for on one device it only logs channel 1 (DOWN) presses but not channel 2 (UP)

Pressing UP on the BROLL itself works and I can also make this automation happen in the CCU however I would like to have HA react to the keypress if at all possible.

Any ideas what the hell is going on here?
Tagging @danielperna84 as the homematic guru on the forum :wink:

Have a look at this section of the documentation. Apart from that I can not help since I don’t own that device.