You’re not completely right here, failure can happen and trigger rollback, which will in fact undo pending changes inside the current failure context
I think it’s not still completely implemented, OkStudio already posted but in case you didn’t see the link, this can help you Auto RTFM article
Also there’s no multithreading in Verse (yet), it’s rather coroutine handling (which is an issue related to game dev mostly since there’s this ticking concept) which they call Concurrency
Also I think you might want to look for articles related to MaxVerse since it’s supposed to be the version that will get shipped with UE6 if I’m not mistaken