VML (and Vasara) will always save tag switches in the state they’re in when you leave the level, which can mess up normal gameplay (especially with destructible switches). It would be nice for it to differentiate changes made within the editor from changes made within gameplay by using the action key (i.e., the way it works in Forge), if possible. I think the “call cleanup” feature in Aleph One 1.5 should at least theoretically make this possible, but I don’t possess enough knowledge of how it works to know if it’s fixable.