can i cancel a canceled delivery?

i have a very strange case here.

the user do a delivery & post goods issue in 12.2011 and after that they canceled the delivery in 01.2012 which is wrong.

so i need to cancel the cancellation document first in 01.2012 and then re-cancel the delivery in the write date 12.2011.

but i can't do this through vl09.

so any idea about this cancellation process ?