Hey Erica, welcome to these parts, feel free to introduce yourself 🙆 if you’d like!
I feel like this is because of how Revit handles rooms, we’ll do some quick checks internally and will get back to you soon. In the meantime, you should be able to send them from a 2D view selecting Rooms as a category filter.
BTW in the future, we’re planning to allow for more advanced filter combinations (eg category and view combinations).