Importing shared sequence?

I've used a shared sequence for one of my Halloween sequences.  In the past I've always deleted the imported channels after I edited it to fit my display.  It is a slow process to delete the imported channels one at a time.  Can I simply go to the bulk channel editor and set the imported channels to a controller that I won't be using?  I'm only using 2 controllers, 32 channels for the Halloween show.  So I could quickly assign the unused channels to controller #3.  Plus saving the imported channels & events would preserve them if I expand the show.

Thanks!!!