Use Labor Rate And Burden Calculation without Posting to GL

I have a requirement to use the project module to record project only labor cost and burden but without posting to the general ledger.

I believe I have exhausted all options and found that the only way I can insert a straight time labor into the project interface with hours only is to also have the system create accounting entries. I am familiar with creating the debits and credits the same to have 0 Gl Impact, but this will not meet my requirements.

In essence, is there a way to say a transaction is already accounted but not costed and have the project system perform the calculations.