How do I upload files to an assignment without removing previous submissions

Re: How do I upload files to an assignment without removing previous submissions

by Sujit Kumar -
Number of replies: 0

I was told the moodle mobile app gets the submission status, parses the file details out of the response and then merges the new and existing file info into an array, which is then sent to the webservice. Can someone show me how this is done?

This line led me to believe the app downloads and re-uploads every single file, I really hope that's not the case.