When I went to Six Flags over Texas last Feb I rode all the operating coasters excluding Mr Freeze since the long was crazy and I was running out of time. I had rode the one in St Louis but I am still saddened that I missed that one. Sadly my list of closed coasters that resulted in missed credits is very high
Closed coasters at parks I visited are High Roller and Excalibur at VF, Superman at SFGAM, Sky Rocket and lil phantom at Kennywood, Shamu Express at Sea World Orlando, Sidewinder and Half pipe at Elitch Gardens, Dragon and Kiddie Coaster at Lakeside, Lost Coaster at Indiana Beach, Carolina Gold Rusher at Carowinds, Flying Ace Aerial Chase at Kings Island, Joker and Judge Roy Scream at SFOT, Dragon at Adventureland. Mystery Mine Dollywood. I am sure there are more but sadly lots of missed credits for me
I was also supposed to go to Kings Island on Vortex's closing day but a flight issue resulted in missing that one as well