BFB doesn't show outstanding Amount if not activity for the billing Cycle

Hello,

We have few customers who didn't have any new bills but they have outstanding balance from prior month bills.  When we ran the BFB process it didn't generate Bills for the accounts who doesn't have any new bills.  I do see the Consolidated Invoice numbers on AR_CONS_INV_ALL but nothing on the AR_CONS_INV_TRX_ALL, Is there an option to generate Statements for these customer acounts? 

Please advice.

Thanks

Lalitha