I was going to post the same link. Just watch wiring to PCD sensors. Can I ask why you're removing it? I may need to do this at some point to fix a parking error, but may be able to do it with the bumper in situ.
I hit a badger and damaged the air intake ducting for the rad. along with the under tray. I have the replacement parts just need to remove the bumper to fit them. My i3 only has rear sensors so one less thing to worry about.
I can sympathise, a badger hit me a few years ago, bumper smashed, parking sensors, Lane departure and washer fluid pump all wrecked - certainly got some weight behind them.
Previous to that an emu dived under the work ute in Oz, not a scratch with that one though 🤔