NLA track disappears

Artwork Animations
#1

I have these Animation Actions, I click push down, they appear as NLA tracks, I save then exit the file and when I go back they are not there?
I can push them down again, but that’s really annoying.
I’m really puzzled here…Any clues ?
Before

Screenshot_2
Screenshot_21318×868 56.1 KB

After
image
image1309×784 43.7 KB

#2

I got it, can’t make those in Library Override files, if someone needed it too. Just need to bake and export on one go