Hi, so there were multiple things incorrect but when it comes to the main checklist every edit must happen individually.
Cards 1-100 were just fine.
Cards 101-200 needed the RC and the SN275 designation in notes (RC, SN275).
The big problem this year is cards 201-241 that are typically in the main checklist are alpha-numeric. This is an issue that the site needs to decide on how these should be listed. We would have needed to either IR every card for removal or make edits to each card.
In this case it was better to delete checklist before collection info/scans started to accumulate and start over.