You haven't missed anything. If your weather has been like ours in WNY has, they will have moved up, and gone back.............moved up, and gone back.
They will play this game all spring long if the weather is not warm and stable. Each time a bunch move up, a few stay up an spawn despite the unfavorable conditions, but most pull back out. A big wave will come when mother nature finally pulls it's head out of her rear end. Where that wave will go is a big question in years like this. If you are on a lake with a lot of shallow backwater spawning areas, and they keep leaving because the conditions force them too, don't be surprised if they just don't go back, because by they time it settles out weather wise, the rest of the lake will be to their liking and bass are lazy, they won't travel miles to spawn in a swamp when they can go 50 yards to the bank of the lake which has warmed up enough.
These fish that are in a constant state of flux on moving up, pulling out, etc...are among the most difficult to catch. They are not locked on beds, and they are not doing "normal" prespawn or postspawn things. Quite often they pull off, out side of spawning areas and just suspend and "wait" for better conditions.