Save as DWG misses many entities?

I have a bunch of Solidworks drawings I have tro save to DWG format. The very first one I saved as a DWG did not save all of the entities? There are two views that SolidWorks only saved the balloons and the centerlines but no other entities. Has anyone else noticed this behavior? Is there a way to fix it?

Thanks

Rick

SolidworksDrawings And Detailing