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You will need to work with your Mortgage company to get the reporting corrected on EX. Sending copies of TU & EQ reports to EX won't do any good, as each company reports independently of each other, and communicates only with Creditors.
Do you have any documentation from the Lender that shows your account as being in a status other than "foreclosure started" ? I'm not familiar with the different terms associated with the foreclosure process, is it possible that it stays in "foreclosure" status until the modification is completed ?