https://forums.autodesk.com/t5/revit-mep-forum/revit-export-dwg-layer-modifier/m-p/5875127#M73457 <P>ok I've checked it</P><P>&nbsp;</P><P>these models were linked as follows:</P><P>&nbsp;</P><P>Linked Project appeared to be the master model</P><P>Primary Project appeared to be linked to the other (and the names of the files are now confusing, but this is how it was saved)</P><P>&nbsp;</P><P>in Primary project there are 3 oval ducts, nothing else</P><P>in the export settings of Linked Project (which is now the master file) there were no layer modifiers for ducts</P><P>&nbsp;</P><P>added a layer modifier, then exported to dwg</P><P>&nbsp;</P><P>link was as block exported on layer 0, once inside the block i see the&nbsp;ducts drawn with the modified layers</P><P>&nbsp;</P><P>it seems to be working for me, did i recreate your problem the "right" way or is something still wrong?</P> Fri, 23 Oct 2015 12:55:57 GMT d.henk 2015-10-23T12:55:57Z