Converted group to blueprint class not visable in Video render

Development Programming & Scripting
1

Hi,
I have grouped some modular building assets together to make a Theatre and Converted the Selection to Blueprint class, possiblyy a mistake? Now, when I render a video the Theatre is not visible. What have I done wrong?

This is YouTube the video I learned how to group blueprints from, but why not show up in video capture? Converting Assets/Groups to BluePrint Actors (UE4) - YouTube

Advice is very welcome.