Didn't you say in an earlier post that a sharpener had damaged your toepick at some point? There's a necessary balance between the height of the bottom toepick and the rocker edge in order for the skater to roll up to the toepick for edge jumps. If the prior sharpener hacked off the bottom toepick, the only way to restore the blade to working order is to lower the steel edge on the blade so that they're correctly proportionate. The restorer does that by repeatedly sharpening the edge to remove more and more of the hard steel until they get the necessary adjustment. I think that's what happened to your lower-edged blade.
That's why it's so important to choose a good skate tech for sharpenings. While blades can sometimes be salvaged in this manner, it does shorten the blade life.
Our skate tech says that the hard steel of a blade goes above the chrome reveal, so there are more sharpenings left in the life of the blade once that reveal line is gone. I had never heard that before, but that reveal line is handy to see if a rocker is flattened or the blade tail was sharpened improperly. That's how to judge used blades - the reveal line should be about the same height from rocker to heel.
One of the beginners at our rink bought a pair of used skates for cheap and the poor kid was so uncomfortable during lessons. She couldn't bend her knees or glide; swizzles and turns were forced. When I looked at the blade, the rocker was flat and the tail reveal was almost all gone. (That's usually a sign that someone sharpened them as hockey blades, not figure blades.) Her mom bought a good pair of used skates with MK Pros that had a lot of life left on them from one of our high-level skater's dad. The skater was doing great on them within minutes of stepping onto the ice.