Hello,
I was playing with the RIR Grasshopper and trying to pass Revit geometry into Rhino. I selected multiple categories to export into Rhino - just to make exporting process easier-. Thats when I realized that when I activate Structural Columns category for export, Railings just disappear. Then I realized its not about these particular categories. Its about the number of categories I select. After 7 categories, if you select another one, it just hides one of the selected. (I believe it was railing in my case) You can see the details in the gif below. Is that a bug? Is that something you guys planned, I don’t know. But it just seemed odd. Thats why I posted here