This has caused me grief before and is doing it again.
Why in the world do the devs edit default engrams only in the inventories attached to structures, which are effectively hidden child inventory classes? There is only one structure that uses each parent inventory BP, so why not just edit the easily visible and accessible parent inventory class? Also, this isn’t even consistent, only being true for some structures.
Forgetting to check for this strange design decision can even lead to random and entirely idiotic crashes that can only be fixed by verification, as you can’t even undo whatever is causing the conflict (although it shouldn’t conflict in the first place).
Devs, please pay more attention to how you are making edits! Because it makes a lot of difference for modders.