Cut-List properties dialog box shows my sheet metal overall length, "Flat Dimension" as exactly 3-times the measured dim on the flat model. Why is this?

Please see attached part file.  I'm really just trying to find an easy way to get the flat pattern dimension into my BOM.  Cut-List properties seems to be the ticket, but I can't figure out why the discrepancy between the properties value and the actual model.  Any ideas?

SolidworksSheet Metal