Hanging a bike from the saddle doesn't change any seat positions unless the seat post clamp or seat rail clamp bolts were loose. I can't tell you how many bikes I've hung from the nose of the saddle over the years. Probably most of them. Without issue. If there was a loose bolt and something moved, we always tried to put it back as close as the previous position was.
Do you know your bike fit measurements? If you do, just check them with a tape measure and make the correction(s). No biggie. Things happen and it's easy to correct if your measurements are off.