Arri rec flag on capture cards

Does anybody know why Video cards like ultrastudio and decklink stripps the rec flag from arri cameras? Is there a update for this?

I did tests with this cards below and none were able to give the rec flag to livegrade and qtake.
Decklink Duo
Ultrastudio 4k
Ultrastudio 4k mini
Ultrastudio hd mini
Mini recorder
Mini monitor

Thanks