Shouldn't this be a check box in folder options? For example, I want to transfer a large collection of DVDs from my laptop (with a small SSD) to my main PC/NAS. "Moving" data is obviously not the goal of this program. But copying is half of it and Sync does it well. Ideally I want to have a "sink" folder - whatever I throw there, it is copied to my NAS and then deleted from the "sink" folder. This option at least allows me to delete this folder and then fill it up again. But it should be a "per folder" option (not "per app")
