The sale of Ally Financial’s bankrupt mortgage unit, Residential Capital, should not proceed unless or until the company provides more information about the deal, specifically whether preexisting contracts will be honored, according to court filings by Fannie Mae and Freddie Mac. The two government-sponsored enterprises objected to the sale via papers filed this week in U.S. District Bankruptcy Court, New York Southern District. The GSEs expressed concern that without changes to the deal as currently proposed, it may threaten the contracts the GSEs have with ResCap to service loans. “The debtors have failed...