Dangling platic panel under radiator

Entering an unfamiliar bank driveway I hopped onto and off a shallow lane divider. Scraping noise, but no apparent damage, no operational problems. After visiting the ATM and restarting I heard a faint scraping sound from the front end. Peering under the radiator revealed a plastic baffle panel dangling by one (of 4?) snap in fasteners. Pulled it off and continued driving for the rest of the weekend.

Questions: Will the absence of this baffle impair radiator or a/c operation?
Can I conn the dealer into re-installing it and charging my Toyota extended warranty?
Should I just buy the missing snap fasteners and attempt to re-insert it myself?
Does anyone with a service manual have a diagram that shows how this part fits?