Similar to the last post, this bridge was lifting due to a bellied top. Someone had attempted to fix it (poorly). It wasn't seated very well after the fact. You can see all the separation in the pics below.
Usually a bridge will require some heat to soften up the glue for removal, but not this one! I had prepared to use heat (hence the water), but as soon as I put in my palette knife, if popped right off! The white inlaid dots covers bolts that keep the bridge seated (normally). I'm going to use those bolts to line up the bridge when I reglue it.
After removal, I'm going to clean the footprint of the bridge for a good string glue joint. I use a low tack tape around the area and cut out the bridge outline with an exacto knife. This also cuts the lacquer around the footprint of the bridge so after cleaning the area, it makes total contact with the top.
Glue and clamp back into place
The reglue was successful, mating the bridge with the top 100%. I torque down the bolts, reinstall the white dots - restring and setup. Turned out great!