It wasn’t long ago that editing a document in Apple’s own flagship apps, like Pages and Numbers, meant that your data was now firmly locked away inside (unless you wanted to start emailing it back to yourself) although there were plenty of Office-editing apps that could.
Now you can at least save your edits straight back into a supported app like Dropbox or FileExplorer which can save and sync to home and corporate network drives via CIFS. Maybe the ipad now starts to become a viable content creator and not just a content consumption device.