worklog that has been billed cannot be edited

worklog that has been billed cannot be edited

In SDP MSP the worklog has been billed... a feature i no longer utilise . 

But when attempting to uplift worklogs by staff the worklog is now not able to be edited and says its been billed.

How can I get around this? i have a couple of hundred worklogs impacted.

                New to ADSelfService Plus?