Hi, I filed a flight plan and realized I used local time instead of UTC.  Trying to edit it, I can only submit a time that's later than the time already filed.  Is this a SD limitation or something else?  Seems wasteful to have to cancel it and refile, even if it only takes a moment.  Thanks!

I can't look up your specific flightplan from here, you'll have to contact customer support. There should certainly have been a delay button available if you were really 25 minutes pre-departure, but possibly the flightplan was filed for the wrong time.