Brush presets

When I create a new brush and save it as a new brush preset. I'm given the option of saving all the settings, which I always check. Shouldn't this mean that when I pick this brush from my brushes at a later date those exact preset settings would be adjusted in the brush setting panel? What I'm experiecing is when I pick a brush the settings in the brush panel are those I used for the previous brush negating all the settings I had taken the time to figure out for the brush when creating it. What setting am I missing so I don't have to try to remember all the previously figured out settings. The problem is worse when I purchase a brush and my previous settings overwrite it's settings.