I am currently running large office building simulation on Energy Plus and I downloaded my files directly from energy plus website(https://energy.gov/eere/downloads/reference-buildings-building-type-large-office-1).It is supposed to be 3 story building,but after running it in open studio it was just 3 separate floors without any wall connecting them together.I uploaded the picture of the build.Can anyone tell me how I can fix this problem?Or is there any other source that I can download idf file for large office buildings that does not have this problem? C:\fakepath\large office.JPG