What causes scaling to change when saving DXF?

In SolidWorks 2011, SP5:

When doing File-Save As... and saving as a DXF, the result is the attached file. The scale changes and results in a dxf that is off the sheet.

Are there additional settings available beyond what is found in 'Options...' when performing a Save-As?

The pages of the SW drawing are being saved as pages within one DXF with the Model page tab being the first page.

Thank you!

SolidworksDrawings And Detailing