Missing families when exporting from Revit Lt to IFC

[info]

When exporting IFC from Revit Lt 2019 some (parametric) families or in place families are missing. What am I doing wrong?

[barthbradley]

Got to ask: Are they actually placed in the 3D View you are exporting?  

[info]

Yes, they are actually placed in the 3D View before export to IFC.

[Viveka_CD]

@info 

Can you share a screencast of what you are experiencing with the export?

Also see: https://knowledge.autodesk.com/support/revit-lt/learn-explore/caas/CloudHelp/cloudhelp/2018/ENU/Revi...

Regards,

[ToanDN]

Which categories do the families belong to? Which IFC Standard did you use to export?

[info]

Settings:

IFC 2x3 Coordination View / Level of detail: Low.Knipsel.JPGFamily: Generic model face based. After export only holes make with voids in the family are shown. All solids are missing.

[info]

After export IFC results are different if Open IFC file is used. Elements are then displayed.