Hi all, i'm using Revit 2015, and i have files that were created in AutoCad with FabMEP add on. when i try to import the 3D drawing, i get a warning "Some ACIS objects could not be imported. to import them, use AutoCad to convert them into polymesh objects and reimport". how to i convert them? we have tried to use FabMEP to do it, but don't know what command to use. it's a large project, so i don't want to explode anything. i need to have all the geometry to come over, including hangers, and insulation. any help would be appreciated.