All of these animations display as “[TEST] Assault_World…” and there’s no way of seeing the full name by hovering the mouse on them or clicking on them.
This is a normal thing. Its because the model names have a certain length to fully show. Hover your mouse over to the one that you want then it will fully show the name. For the overwriting, I do not know how to state that it cannot be changed. I think you might have to rename them yourself, in other case you should keep trying to rename them.