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When the Referent Rate file from a saved MP-SIR session cannot be located, click on the Other Rates button on the session's Rate tab to open the Referent Rates dialog to find an alternative referent rate file, or the original rate file if it was renamed. Select a file and to see the Rate File Details for that session click OK.
Use the View Original Rate Session button to bring up the session that was used to create the rates in the first place.
