Unable to write-off unbilled disbursement

QUESTION: We are unable to write-off a -$45.00 credit on for a specific matter. We right-click and select write-off, and nothing happens, no message. I've even tried while using admin permissions.

RESPONSE: You are unable to write off the unbilled disbursement because it is a pre-billed disbursement linked to an invoice which is not posted. Because the invoice is unposted, the write off of the linked pre-billed is not possible. To remove it, access the unposted invoice properties and remove the pre-billed disbursement.