How to export dxf with SW2011

In our company we frequently export dxf files (flat patterns of Sheet Metal parts) for lasercutting. The parts contain sketches at the fixed face side of the part. We use them as "engraving" of for example welding positions or part ID numbers. Sketches at the not fixed face side are not to be shown in the dxf. In SW2009 it worked fine but since we are using SW2011 the sketches at the not fixed face side of the part are also shown in the dxf. Parts can be "engraved" at the wrong side.

We commonly Lasercut Stainless Steel so wrong parts are a great loss. Is there a setting in SW2011 that can prevent engraving to be shown in dxf if the sketch is at the not fixed face side.

Is there a solution or an idea?

Regards,

Gert

SolidworksGeneral