Unfortunately, I was in the middle of a short editing session when the OSM outage (apparently due to a #DDoS) occurred. So I’m keeping my tab with iD and my pending changes open (hopefully not needing to rely on LocalStorage). I wish I had used #JOSM so I could save my session to a local file, but I was on a laptop without JOSM.
@seav Click the save button. At the bottom left of the panel where you can enter your changeset comment, you can download your changes as OSC