Here's a good resource on the continuity around Descent into Avernus, thealexandrian is cool blog in general.
A Textual History of ElturelIt's also interesting how apparently the artificial sun is a mistake starting with 4th edition where Elturel was confused with Elversult
Thanks for transcribing those entries GM4Him. It helps not having to boot up a game, and dig through a virtual chest to find all these things again and again