Just too lazy to fish it out. People have had the entire plastic disk cut out by the hole saw blocking up the drain too. If the disk falls off the hole saw before it comes back out it seems sometimes they just look the other way.
2015 Rockwood Signature UltraLite 8282WS Platinum, GY Marathon LRD, TST 507RV TPMS
2005 GMC 2500HD CCSB D/A, Curt E16, Prodigy P2, Garmin RV760LMT w/BC-20 b/u cam