Job Billing Data Entry

In Sage 100 Job Cost We are trying to bill a customer for unbilled time and material.  This is an ongoing job and this is the second time we have invoiced this job. The first time we billed with no issues. We go to the job billing data entery window and then enter the job to be billed, when we go to the lines tab it only brings over the unbilled labor.  It does not bring over our unbilled material/sub contract labor.  For some reason it is not showing up even though it has never been billed.  We can go to the job transaction detail report and it is on the report and shows as non billed.  I checked the dates to make sure they didn't get posted in to a future date and the date was just fine. Any ideas why this one line item is not showing up even though it has yet to be billed? Thanks