Maybe im not executing it correctly, but when ever i want to go back and edit a boundary condition (when i have several attached to the same object) i have to delete them, or delete until the correct one pops up, then i can change the one i wanted to tweek, then re-add all the onces i wanted to keep.
There should be a simpler way, maybe promt all boundary conditions attached to a object, so you can adjust accordingly and with ease.