Maybe worth a look. Sometimes people get caught when creating a “new” Item with a name like TestSwitch, and it picks up rubbish left over from some other experiment a year ago involving a long forgotten TestSwitch.
Zombie link checking -
Bear in mind we’e going down this side issue rabbithole only because your test Item doesn’t seem to be autoupdating as expected. Autoupdate explanation -
It’s all rather off-topic as you have your rule working … but I wouldn’t like mystery happenings in my own system