The comparison page has been updated with a a lot more TV shows and comparison data. I also added links for currently airing and shows missing on TMDB. I also encourage you to use the advanced filtering which helps find things. Let me know if any other built in sections make sense.
I’ll have an update in a few days with more detailed logic on how we will handle moving things over. I’m specifically talking about shows that are currently airing versus those that already ended.
Hrms. I’m the maintainer of a few shows on TVDB, mostly YouTube oddities, and started moving one of them over to TMDB today. I added the TVDB ID to the TMDB entry, then went back to Trakt.tv and “Import TV show”, then added the TMDB ID. Instead of associating with the existing trakt.tv show, it created a duplicate, it seems:
The original: https://trakt.tv/shows/this-week-in-star-wars
The duplicate: https://trakt.tv/shows/this-week-in-star-wars-2020
If the show already exists you only need to add the ID on TMDB and refresh the data of the show on trakt. You can do that here:
if it doesn’t work immediately, refresh again in a few hours, it should pick up the TMDB ID and you will be able to see the TMDB comparison page. In this case, there are 2 shows with the same IDs so I suggest you send a support ticket asking them to remove the duplicate (so one page doesn’t bug the other).
@morbus sounds like you found a bug. I’ll try and get that fixed. For now, you can just refresh the entry directly as @Sonply mentioned.
Might I suggest a filter for shows that are 100% match so we can push them though faster or just have them auto push through?
Is there any solution for the following issue:
On TVDB a show is listed as a series, on TMDB as a movie.
Example:
https://www.thetvdb.com/series/hulk-vs
I think I’ve also found another edge case, I’m not sure how widespread it is, can’t imagine it would be a massive issue.
Pokemon Chronicles (Pokémon Chronicles - Trakt.tv) has an interesting comparison.
Trakt is showing 26 episodes in the season - but the comparison page (Trakt.tv) shows 22 episodes for TMDB and TVDB - I’m assuming the comparison is a straight API compare between the two sites.
I suppose this move is one way of cleaning out duped/broken episodes! 
That’s what happens when at one time wrong episodes are added to tvdb. They get synched with Trakt. But the removal doesn’t
I see two “The Equalizer” shows.
i think this is the correct from TMDB source
https://trakt.tv/shows/the-equalizer-2021
And this seams dublicate, it has also a number prefix on the title from TVDB
https://trakt.tv/shows/the-equalizer-2021-172856
A nice button next to a show for “check for deletion” would be nice.
Also a same button for an episode, since we do not have an automatic cleanup of redundant episodes.
Just for the record, I understand how they got there, I’ve reported many a dupe on the support site 
I was just highlighting comparisons might be 100% matches - but they might not necessarily correspond to the current Trakt data.
So any process manual or automated needs to take that into account instead of blindly relying on the comparison page (which is a really useful tool)
This has completely messed up my media libraries that list 2 part (read double length) episodes as separate episodes. And TMDB has no interest in changing their database or rules to match most people’s libraries. I’m very unhappy about you guys switching.
Trakt, TVDB, TMDB, IMDB, etc., etc., don’t give a crap about your media libraries
Yes, I’ll add that in this week.
Good question. I’m assuming this was released as a single movie? If so I think we’d keep that one. If the TV show is more accurate, we’d keep that entry but “lock” the data and it wouldn’t get any future updates from TVDB (or TMDB since it doesn’t exist as a TV show).
We would handle this in support. The extra episodes would need to be manually removed by us. I also noticed the air dates are quite different on this show between the 2 sources.
This should be handled via support.
TVDB has indicated their v3 API will go away at the end of March.
Which specific show are you referring to? For the most part we’ve only moved over shows that fully or partially match and haven’t been removing episodes.
There are still 77.000 shows left to transfer. Some of these will not transfer due to the nature of the content (podcasts, YouTube channels, etc.). Once the API goes dark, will all shows automatically switch to TMDB (assuming the show has linked the TVDB ID on the external links section on TMDB)?
I also noticed the red ‘Migrate to TMDB’ button when a show has a 100% match which has made it a lot easier to transfer shows. Thank you for that!
Hi justin, thanks for reaching out. The first show I’ve run across that has problems is season 3 of SEAL Team. It seems that the Trakt site is correct, but the data I’m receiving from the API shows the TMDB version of Season 3. The issue starts with Siege Protocol and continues for the rest of the season.
A large number of these shows (45,000+) have already ended, so in those cases the show would just stop getting updates until it is migrated to TMDB. A lot of shows will just become “locked” since the data isn’t really updating anymore. The currently airing shows are the larger focus to get migrated over. We don’t plan to auto migrate shows over.
The Trakt API returns the same data as the website, are you sure it’s the Trakt API giving you that different info? We’ll need to handle shows like this in support and determine which order makes the most sense. I plan to allow seasons to be individually locked for a show. So in this example, we might lock all the current seasons then TMDB updates would only happen for season 5 and newer.
Apparently the issue was on my side. Thanks for helping me figure out where to look. 
I think I found a good resource for press releases. I would like to know if anyone knows if this is legit as you can even find individual episode press releases for some shows.
it is perfectly legit
Thanks, I was having issues finding good sources for conflicting air dates and I ran across that site.