Unless you know precisely Which Photoshop layer you need, you're out of luck going that route. Since very few people give Photoshop layers logical names, it's tough. But you can do this:
Import the Photoshop document as a comp. Find the layer you want . Find it in the project pane. Use Alt>drag or Opt>drag (Mac) to replace it in your current comp.
Thanks for advice/tip with "ALT and drop" - i didn't know it.
But can you tell my why this is not working automaticaly and if I do the same by own hand?
PS layers don't have persistent internal IDs, so AE can never know what actually changes unless the structure and names of the layers remain the same throughout. It's really a limitation in the PSD file format more than anything else and the more they hacked it in the last years to add support for group masks and whatnot, the worse it has gotten...
So I can't work like that?
Replayce footage in PSD and reset After Effects and waiting for see changes?
And the secong. Why option with IMPORT is NOT WORKING at all? I see on screen what I did and then still I can't see any new modyfied files. It's not working.
So, After Effects CC is broken and I found this BUG. You can try by yourself and even report this.