You can leave it on or take it off. Doesn't matter. The residual will burn off regardless.
I used really thin stainless safety wire to tie my last baffle material, after repacking. Allows for a tighter packing, duesn't burn or rust and can be easily undone.
Just throwin' that out there...........
“When the going gets weird, the weird turn professional....” ~ Hunter S. Thompson~
R.I.P. Rubberdown. 1971-2012