Some 231 non-agency mortgage-backed securities serviced by Nationstar Mortgage took nearly $1.0 billion in losses recently due to accounting for principal forbearance that occurred in previous years. Nationstar acquired the mortgages from Aurora Bank and said the revisions were made to remove inconsistencies in the reporting of previously forborne amounts. The revised losses follow a similar action by Ocwen Financial. Fitch Ratings said the servicers don’t anticipate similar significant ... [Includes two briefs]