Route is not getting updated in billing

Hi all,

I have a freight condition type which is having the key combination of plant & Route (werks/route). we give route manually in the delivery document header but it is not getting updated in billing item and because of that billing item is not picking the condition records.

My copy controls from LF > F8 Header 009 and item 010 maintained.

Please give your valuable inputs to resolve this

Regards