Revenue recognition: Records in VBREVK and VBREVE missing in VBREVR

Hi

           We have few sales orders that started out as charged,  which was then changed to FOC line items.  After invoicing though,  a record was created in Revenue recognition for deferred with the original value which should not be.  The line item shows up in VF45 with deferred revenue unrecognized,  but do not shows in VF44 to be recognized.  Records are created in VBREVK and VBREVE,  but not in VBREVR. 

            Any suggestion on how we can fix this error,  Is it possible to delete the S.O. in the revenue table (VBREVK & VBREVE)  or how to get it off the unbilled backlog?

Thanks & Regards