I'm circuiting some condensing units and exhaust fans on a roof. The condensing units circuit fine, the panel/circuit tag shows the correct information. When I start to circuit the exhaust fans, everything seems fine until I get to the tag, which just shows a "?". When I check the properties of the exhaust fan, Panel and Circuit Number are blank. The exhaust fan circuit is there, I can select it and it shows the correct panel name and circuit number, it even shows correctly in my panel schedule. I can't figure out why my panel and circuit number aren't reading back to the fan. I've checked the electrical connector properties in both families, and they seem identical. Any suggestions?