Problem with dwg export in Revit - Ceiling grid - underlay

[wiktor.kuzmicki]

I have problem with dwg export in Revit. Ceiling which is visible on the view like underlay doesn't export in dwg. PDF export ok in Revit view everything ok too . Also this problem there is under  on the the ground flooron the ground floor everything ok.

[RDAOU]

@wiktor.kuzmicki 

If it is visible on screen the underlay will be exported to DWG...

• If in doubt, place the view on a sheet and export the sheet to DWG
• make sure that the Layer Color is not the same as the background you are using in the application where you are editing the DWG 

See sample export view side by side Revit/DWG TrueView

[Yassar_Emam]

have you already found a solution?