PJC work in progress report

I'm trying to figure out the WIP report in Sage.  The report in PJC doesn't give me what I would consider to be a proper balance even when looking at the totals in the contract maintenance screen.  My client and I have run this on live data and on the sample data but can see why some jobs appear on the report and others do not.

Looking at sample data (SAMINC or SAMLTD), the report does not include all costs on the contracts and rev rec has NOT been run.

Anyone able to shed some light on this??

TIA

Terry