I'm conflicted about Auto-Save in Cubase, for instance. I have it turned off now, because of my history of it creating a problem which causes a crash. I think it is auto-saving during a real save, but the correlation with an invalid auto-saved file created at the time of the crash is too strong to ignore.
But sometimes I'm too bold saving over a project name and I was saved the other night because during the creation of a previous version of a project I was doing one auto-save; I needed those midi files.
So I don't know if the same pitfall applies for VE Pro, I reckon it does reading the remarks 'locked out during autosave', but I'm finding that a modus operandi out of being paranoid about saving and file names [forced by no resort to autosave] is the way to go. I lost a couple of changes last night owing to a crash but I should have hit save after every move; keeping the old version of the instrument and saving these [mapping] changes as viframe for the time being. Strategies.