Ellegon

That's what I don't get... When I open the packed bundle it automatically asks me if I want to unpack it.. if I do, I have to give it a file name and get the bundle unpacked. When I then import the changed assets file and save it, it's no longer packed (and therefore bigger). If I don't unpack it, nothing happens and I don't have an open file I can import to or save again. ?

I now have a problem myself and I'm not sure what I'm doing wrong... I have a compressed assets file. I was able to decompress it and then export it. I re-open it and can export a texture, change it, and re-import it with "Edit".... BUT... I can't recompress the asset file and therefore can't use it. I tried this with a mod (just to see if I get the process right) and noticed that the mod does not work with the uncompressed asset file, even if I don't change anything at all in it. I'm sure I'm doing something simple wrong.... but what?

Open the uncompressed File and you should see a list of all the assets. Look for the data you want (e.g. a texture) and select it. Then click on "Plugins" and you should get a list of export options.