Currently, when I change something in a notebook file I have uploaded, the uploaded version is saved in its new format automatically, which is bad when I need to present the same lesson to several classes the same day. Is it possible to make the save feature optional instead of automatic? I have resorted, in the meantime, to using the open Notebook file in Notebook while I also have the SLS Online version running for the students. It works, but it a bit clunky.