Multiple drawings different configs

HI

i have an assembly that has 3 or 4 different configs and have been asked to produce a drawing for each config......at the moment i have done one drawing and then change the config views as needed

then i thought if i copy the current drawing can i have a page for each config however it seems that if i just copy and paste the drawing then changing the config on drawing 1 also changes it on drawing 2

am i missing something - is there an easier way to do this?

SolidworksDrawings And Detailing