UPDATE Edmunds did send an apology. They also clarified they've done this proactively for all dealers that didn't opt-out after an email communication earlier this month. I can appreciate a vendor that seeks me out to bring clarity and accepts responsibility. They did say it was sent out on the 12th. I think they misspoke and it went out on the 5th with a cut-off of the 12th (I found it in my spam). The roll-out on their end was not supposed to replace any prior feed that a dealer was already running. In our case, the Edmunds feed DID replace the ones we had set up with DBA Platform which isn't good and now adds work on our plate to fix.
For those of you that set up Cars for Sale early, and are also Edmunds dealers, check your listings to see if your UTM tags now contains
campaign=edmunds_carsforsale. If you'd like to resolve and revert back to your other provider, you can reach out to (and he asked me to post):
Ian Isch - Edmunds
Senior Director, Sales Development
216.315.1222 mobile