Detaching model files in MX Road

I am facing some issues regarding attaching and detaching model files in MX Road. 
i) Survey model file after importing shows all the levels(numeric form after giving them reference) instead of points only which makes it difficult to see the existing road edges and centre line.
ii) After displaying other models, the survey model gets displayed in each and every model file like it gets freezed in the screen which makes it more difficult to draw alignmnets.
iii) Even after deleting survey model, still it is displaying on the screen.

In the photo below i have deleted all the models but still survey is showing on the screen.