adding welding to sheet metal create error in drawing

Hi,

I had created a sheet metal part with bending part. To filled out the gap between two bending parts, I have added a welding.

The flat view in the part is fine and had no error.

However, when I generate the drawing with the flat view, it gives me an error message (part had rebuilt errors).The flat view had missing geometry. I tried many things and I finally deleted the weldings. After deleting the weldings, the drawing had no more error.

In other parts that I have made with sheet metal and welding, this error message doesn't appeared.

Can anybody explained to me why sometimes  it is working with the welding and sometimes not ?

I have tried with both solidworks 2010 and 2011 and the same thing was occuring.

thank you

SolidworksSheet Metal