I tried registering my bloomsky with wunderground again. This time it worked without a hitch.
If you have an existing station, don't put in the existing station id on the registration page, otherwise it also feeds data as well as the image. Given things like the pressure adjustment problem, it really messes things up.
I ended up having to delete my registration and directed the data to my experimental station ID. You can still associate the camera image to an existing station, though, but apparently not to two stations at once. So the Bloomsky is updating my "production" station camera image, but the Bloomsky data is going to my "experimental" station with my old web camera image. (Yeah... it's confusing)
The new camera image isn't showing up on my flash sticker, though. They haven't worked quite right in a while, though. Maybe if I just let it sit long enough it will change.