I'm on a cartoon animation project with multiple scenes (comps). Some scenes have been individually animated in different projects (AE files) by a friend of mine and later imported on the main project.
It happens that, after adding all the scenes (projects) to the main one, my friend had to correct some stuff on her projects/scenes. I suddenly realized that her corrections where automatically refreshed on the projects I imported to the main one. It would be similar as Dynamic Link (refresh between Adobe programs like AE to Premiere). The difference is that this is all between same AE files.
That would save a lot of work on the future if I understand how to do it, cause I've done the same procedure before and never encountered with this "auto-refresh" until now.