Editing PPG Accepted Photos
It also happened to me on my first accepted photo.
I though I could get a better description adding lens data (non pentax), and the photo returned to waiting status.
I emailed PPG about it, and they told me that every change in a photo or its data makes it returned to accepting process, but previous votes are not missed, so if the photo is the same, it should be returned to accepted status again... at least it should.
Mine did: now it is again accepted, but I have not changed any other photo, just in case