mfbf backflush

hi,

i understand that product cost collector can use mfbf to do backflush.

1 may i know any other process also use mfbf? i mean besides product cost collector. if yes, can provide.

2 may i know if i can use mfbf to backflush component only? normally in mfbf, fert material to enter at mfbf main screen then only second screen only showing component. now let say i just want movement 261 without 131, possible? if yes, then how?

thank you