In qListView when the user clicks "Upload", it will redirect the user to an upload.aspx page. The user can choose to browse to a file here, and click the "Ok" button to upload the file. The user will then be redirected to another form page to fill out any metadata for the file. This form page can be edited to replace the OOTB SharePoint form with qListForm configured as EditDocument. If the user then fill out any required field on this page and click "Save and Close" button, this automatically save the form data and redirects the user back to the page with the qListview web part.
Without using qListForm, we cannot control the action of the save button on the SharePoint form, so have no way of going back to a particular web part page.