Export Flat Pattern

When exporting a flat pattern DXF, from the sheet metal application, the file is empty.  But, if I create a drawing, and add the flat pattern, then export via the DXF/DWG translator, I get the proper output.

So what gives?  log file isn't very helpful:

INFO-
INFO-		Unigraphics Version NX V11.0 to AutoCAD R13
INFO-		
INFO-
INFO-		Running UGTODXF Translator .....
INFO-
INFO-		Start of Translation: Fri Oct 12 15:33:50 2018
INFO-
STATUS-		Converting C:\Users\dkieffer\AppData\Local\Temp\dkie21B4E3DAhikq.prt
STATUS-
SUMMARY-
SUMMARY-	Summary of Unigraphics Input Entities
SUMMARY-	For Unigraphics File: C:\Users\dkieffer\AppData\Local\Temp\dkie21B4E3DAhikq.prt
SUMMARY-	------------------------------------------------------------------
SUMMARY-	Entity Type					Count
SUMMARY-	------------------------------------------------------------------
SUMMARY-	------------------------------------------------------------------
SUMMARY-	Total ....................................:	0
SUMMARY-	------------------------------------------------------------------
SUMMARY-
STATUS-
INFO-
INFO-		Writing File: Y:\Engineering\Design Engineering Dept\DXF Checking Bucket\DK\251817test.dxf
SUMMARY-	Summary of AutoCAD Output Entities
SUMMARY-	------------------------------------------------------------------
SUMMARY-	Entity Type					Count
SUMMARY-	------------------------------------------------------------------
SUMMARY-	------------------------------------------------------------------
SUMMARY-	Total ....................................:	0
SUMMARY-	------------------------------------------------------------------
SUMMARY-
INFO-
INFO-		End of Translation: Fri Oct 12 15:33:52 2018
INFO-		Translation CPU time: 0 m, 1 sINFO-