Since upgrading all the functions does not work properly: when using the graduated filter, you can not edit with the brush, it goes directly to a new graduated filter. When using the adjustment brush, you can not erase but only add.
I have the same problem in camera raw. After applying a graduated filter I cannot edit it with the brush. If I try to apply a brush stroke is simply reverts to a new grad filter. Also, if I try to change the brush size before making a stroke I get an error beep. The radial filter does the same thing. If I use the brush tool and then click on erase, it simply adds to what was done with the brush tool. However, if I hold down the option key while trying to erase, it works properly.