Maxwell Systems introduces Pro-ContractorMXversion 3.1, which delivers important capabilities to enhance intercompany transactions, change management, lien management and reporting. The new software version includes a new Field Order Management module to create and manage project field orders for employees, equipment and materials; new reporting for subcontract change orders to more easily identify commitments and changes; streamlined process for managing vendors’ invoices, payments and transactions; and support of Microsoft Windows 8.