DontUnderstandMyIpad
iPF Noob
The way iOS currently handles files, a single file can be opened in multiple apps, but only be edited in one of them. Otherwise you won't be able to open the updated version in all files.
The closest you will get is by editing PDF's in Goodreader and then opening the PDF's in other apps using the Open in... button. Since any edits outside Goodreader will not be synced back, you would have to reimport the edited file into Goodreader, be it through iTunes, Email or Dropbox or perhaps an Open in... function, though PDF Expert does not seem to support this.
The closest you will get is by editing PDF's in Goodreader and then opening the PDF's in other apps using the Open in... button. Since any edits outside Goodreader will not be synced back, you would have to reimport the edited file into Goodreader, be it through iTunes, Email or Dropbox or perhaps an Open in... function, though PDF Expert does not seem to support this.