Clayton Holdings, an information and analytics provider, has bought origination outsourcing firm Mortgage Resource Network for an undisclosed sum. : eAppraiseIT is buying Kalamazoo, MI-based Network Appraisal Services, which specializes in online appraisal services. The firms did not release the terms of the transaction. : Access Business Technologies released two new modules, MortgageDesktop 7.0 and MortgageExchange 7.0, for its flagship product Powercore. : …