Quote:
Originally Posted by chaley
What you say is true for the Android version of CC, at least up to Android 6. The OP is using the iOS version of CC. AFAIK iOS does not permit sharing of files by path. It instead requires that app A (e.g., CC) hand the file contents app B (e.g., the reader app), which then does whatever it wants with the contents. Steven will need to confirm this, but I think that is why there are multiple copies is some, perhaps all, reader apps.
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Absolutely right. Every iOS app is a "walled garden" with its own data, and in order for a reading app to read a book, it needs to have a copy of that book in its own private filestore.
What happens when you copy a file to an app which already has a copy of that same file is app dependent. Some (eg GoodReader) will tell you that the file already exists and ask you if you want to overwrite it. Others will create a second copy of the file with a different filename.