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Description
Right now the users have to guess what is the old file name that in the cases where the new file version has a different name is the exact old file name or in the cases were the file name doesn't changes is the old file name with the .zs-old post fix.
After the update process ends successfully some clients may require to know the location of the old file in order to delete it, move it to an special location or doing something else. Therefore it's required a reliable way of retrieving it.