I've run into this bug too. It won't update no matter how many times you enter it. I run into this after updating and saving. Once I print, it doesn't show up and then it reverts back to the original miles.

Thanks for flagging this, Lance Weiszbrod — sorry you’re running into it, especially if it’s impacting the whole dealership. To help us narrow it down, where exactly are you updating the miles (vehicle/customer record, deal, service RO, etc.)? And after you hit save, do you see it revert right away on the same screen, or only after you refresh/reopen the record later? Lastly, is this happening across all vehicles/records and for all users at your store, or only in certain scenarios (specific records or mile values)?