I am having problems importing 3D Models into this drawing, I created it using a 2017 trial package but am now using it in 2018 version, wondering if this is the issue?
Have tried copying and pasting into a fresh document but same result.
When I start a new drawing in 2018, no problems, all works sweet, therefore know I am doing the right thing.
What sort of problem are you having? You don’t suppose it could be due to the fact that your bar room is about 6 by 7 Kilometers and the things you are importing are scaled for human use?
You probably want to go into Model Units and change the units to millimeters, too.
You should get into the habit of using groups and components and make sure you have face orientation correct. The blue faces in your model are reversed.