when switching disks...

im just facing this problem because i finally starting organizing my samples onto different disks. The problem that has arose is that when i switch disks the sounds switch to the sounds to the second disk. for example ill make the drums on the sequence, then lets say i want to add some piano keys so i put in a disk that i have my piano sounds on, all of the drum sounds will be replaced by the piano keys that are on the same pads as the drum disk. thanks for any help.

for the 2kxl you need to add to the sounds already in the mpc.......also once you do it you need to go to program and select which program will be on 1,2,3 and 4.......this way if your drums are on drums 1 you can keep them.......when you load the new program it takes over the "drum 1" you have to reassign them