Cannot Adjust Work Log Charge

Updated to ServiceDesk Plus v8216 recently. Now when entering a new work log for a request you can no longer modify the total charge. If you wish to credit the charge (not charge for the work done), i.e., enter a negative value for "other charge" which is now the only field you can modify the other ones are read only, you cannot. Now we have no control over billing other than what ServiceDesk calculates and insists upon. We need a way to adjust the total charge per work log entry. As is, this new restriction doesn't help us at all and makes the program useless. ManageEngine needs to consider how customers use the program before making these kinds of restrictions and giving them the option of turning it off or on by choice. Still awaiting an acceptable solution.
RE: [Request ID :##6987307##] : Cannot adjust total charges for work requests