Fitch Ratings updated its rating criteria last week for MBS backed by seasoned mortgages, including re-performing loans and nonperforming loans. The revisions to the criteria removed two standards that Fitch previously applied when analyzing seasoned mortgages. For re-performing mortgages originated before 2009, Fitch will no longer consider the original loan documentation. All mortgages will be treated as though they were originated with full documentation, even if the mortgages were originated with less than full documentation. “In recent years, the distinction in borrower behavior for loans with different original documentation levels has disappeared...