Is there a safe way to exit the game in full offline mode?

I don't now if this is exclusive to full offline or not but many times when I logged off and then logged in later I basically went back in time. Sometimes a quest that I had accepted is not, or an item that I had put in my stash is in my inventory and once I even lost a perfect 3 lp slam which was quite rough. Is there a safe way to do it? The way I do it now is I put everything in my stash and go through many portals because in my head somehow that would help. I have no idea if it's even remotely useful though