When using the new File Uploads Parameter do you have to save the file to be uploaded on your local drive and the server/hub? Do you have to update the .morph and publish to the server when you have new files to add for uploading?
When a workflow has the File Upload parameter(s), the local files selected by the user are uploaded to the Hub automatically if the workflow is executed on the Hub. Their location on the Hub is defined by the system and can be retrieved in a workflow using the "Uploaded files" action.
The action (and the parameter) also works correctly on Desktops as well, although in this case it simply returns the local file paths. So it should be no problem designing a workflow with the File Upload parameter.