Sorry to revive this old thread yet again... but I have a problem very similar to the original post. I am working on a large apartment project in Revit with light fixtures, walls, etc. in the groups. Some of the light fixtures are upside down (orange object in image below). I do not want them to be upside down. I cannot figure out how to rotate/flip them to be oriented correctly.

I've already spent most of my morning reading through this thread and various other webpages related to this topic, with no good solutions to my problem so far. Some of these include:
1) "group the family, rotate it, and ungroup it" - Revit does not let me do this, see attached screenshot.

2) "open the family, set the family to be work-plane based: yes, and always vertical: no" - I am not super knowledgeable about how family parameters work, but I'm pretty sure the family in question is face-based and does not have these options in the list of family parameters. (see attached file, which is just a save-as of the group in question)
3) "click the flip icon that should appear on any face-based or workplane-based families" - not appearing for me in any views, not sure why.

4) "Delete the light fixture and reinsert it correctly / copy the one from the living room into the bedrooms" - This deletes the tag and circuit that our electrical engineer made already. If there is no other way, then I guess I'll make him redo some work, although this is obviously not ideal. I'd like to flip the light that is already there, if possible since it is already tagged and circuited.
5) "Make a new generic family instead that is not face-based" - I think this will be my long term solution for this situation on future projects, but not this particular project because it is too far along. (In general, I've found that Revit does not handle face/workplane associations well when objects are placed inside of model groups and later need to be modifed/moved in any capacity whatsoever.)
Any suggestions for flipping this light?