I have the most recent updated DCS App on my Android phone, and I updated my TIU to 6.1.
The problem I'm running into is whenever I create a lash-up it works fine for that session but when I restart my TIU and WIU the lash-up goes into inactive and the 2 engines in the lash-up become active with their unique entries.
At this point I thought I could just inactivate both of those engines and reactivate the lash-up, but it gives me no button to move to active. As you can see below SFE E-8 #83 and 84 are both inactive, but the lash-up (Santa Fe - Super Chief) can't be edited.