How to use static collections to have buildings appear as one piece in LOD?

[Attackpony]

I would like to have buildings I have assembled to show up as one piece in LOD. However on many buildings, seemingly random, some pieces have no lod at all.
I read that making static collections can fix that, but how? I made static collections, generated LOD but nothing changed. The only option is to make it full LOD but that would cause issues with fps.

[zilav]

You need to create the missing LOD meshes yourself, CK doesn't create them itself.

[Attackpony]

In a modeling application?

Edited July 17, 2017 by Attackpony

[zilav]

Yes.