Topic: RME Fireface UC, Routing / Adat

Hello
I have questions about RME Fireface UC, I made a the routing in order to connect 2 softwares, Usine and Ableton Live. (A Rewire system isn't possible between thoses)
Until now, I used Output Adat 5-6 from Usine to enter in Ableton, and Output Adat 3-4 from Ableton to enter in Usine.
It was ok.

Two problems
1 : I wanted an Output more from Usine to Ableton. And with Adat 7-8 or Adat 1-2, nothing happened. Would you know why? and how to do?

2 : Today, the RME doesn't communicate anymore by Adat. I should replace this way by the analogic I/O (which are not always free).
Would you know this problem and how to do?

Or should I do an update on the Totalmix or what?
Is there a risk of erase the previous configurations?

Thank you
Regards
Gwennaelle