Is there a way to have the custom properties from your SW model embed into an IGES or STEP 203 or 214 export?  I am working on a customer process that requires traceablity to be imbeded in the exported files.  Currently the only way I know to do this is to rename the file to a .txt, add the information I want as a header and then rename the file back to .iges or .step.  Any help would be appreciated.