after uve chopped the sample

on my 2000xl, i load all my drums on to the pads but wen i chopped my sample in the sample editor, den export the program on to the pads it takes away my drum sounds , y is dis?

Because you put your drums and your sample on the same pad bank on the same pads so it overrides. So if you want to stop that you need to chop in the Zone window and then go to Edit and pick Slice Sounds yes Create New Program Yes and then assign your drums to Pad Bank B