Something odd has happened after SeriesGuide updated to version 2025.2.10.
The app did a long update on TMDB at the end of which a large number (but not all) shows have lost their release year. I managed to capture one of them before and after:
Before TMDB update:
After TMDB update:
This has not been changed at the TMDB end:
The first_aired date has also gone from the export file: “first_aired”: “”.
Previous entry here before the update was: “first_aired”: “2021-09-24T01:00:00Z”
I don’t have an exact number, but this has happened to about half the shows in my collection. The rest still have their first_aired date, e.g.
“title”: “Gen V”
“first_aired”: “2023-09-29T02:00:00Z”
I can’t see a pattern of which shows were affected. It seems to be random.