I'm creating several [classes of] parts with a number of variations using configurations. But other parts are made that are closely related to ones I already have; in this example a truss-head fastener has been made from a pan-head fastener part, with the only relevant difference being the head height, diameter, and some minor edits of the relevant curves in a sketch. 

I've made the truss-head by saving as a new part, editing the sketch to change the geometry (this part works no problem), then editing the Excel design table that controls the part. However, I've been having trouble getting the actual dimensions to update after the table is edited.

For most of these part transformations I've been able to affect the dimensions of every configuration EXCEPT the one that is active at the time the table was edited. So I've been able to edit the table for EVERYTHING ELSE, then switch to a different configuration, then edit that last one to get the whole set updated. The example I'm showing below was a little more stubborn; NONE of the configurations updated to match the table until I applied the "Rebuild on Save" mark to all of them and saved, and it then updated everything except the current configuration again. I couldn't get that specific one to update; I had to delete it and re-create it in the table to get it to work.

"Rebuild All" doesn't seem to do anything. If I double-click on the dimension, it warns me that it's driven by table and kicks me out of edit mode without changing to the correct value.

As you can see in the picture, the configuration table is correctly updated to the new values (so I assume this is NOT a problem with Excel), but the actual dimensions in the relevant sketch are not:

Am I missing something about forcing dimension updates using a design table? It seems counterproductive to have to always have the dimension correct BEFORE you assign them to be driven by the table, especially if they're formula-driven values where you can't be sure you'd ever get them right the first time.