Need the ability to bill time and material sales orders at a milestone level. Example: Sales order has a line for an amount of $6,000. Customer wants to bill $4,000.00. Customer also has a WBS setup for $10,000 and on that same billing bill $5,000 of that amount. Also should be able to choose a category so the GL is hit for each line to a different GL account. Then mark those lines on the sales order so that it shows amounts that are left to bill. Revenue recognition runs on the actual billed amounts. Or add the ability to modify the billing amounts during the invoice proposal process.