I know this feeling. Last year, I flew in Envoy and they didn't collect my Systemwide Upgrades on USAirways. In my trip report initially I posted that fact; then I removed it; then I added it back in; then I removed it. There was a discussion about not collecting SWUs, and I almost replied there too.

In the end it doesn't matter (which is why I'm posting here) since I was not able to use that systemwide again anyway