This doesn't work this way.

We always keep the entry with the lowest Id, which mean the entry created first in our database.

The one you are stated as correct is in fact the duplicate.

By the way, next time, file a content report (Overview -> Report) on the corresponding movie or series page.

@Rashomon66 said:

The Collector: Allan Stone's Life in Art is listed twice.

Correct listing - has a user score and on Letterboxd with reviews
https://www.themoviedb.org/movie/402500-the-collector-allan-stone-s-life-in-art?language=en-US

Second listing and not correct - no user score and cropped poster and no director
https://www.themoviedb.org/movie/278569-the-collector-allan-stone-s-life-in-art?language=en-US

Thank you very much.
For those who do not know, the TMDb rule is to keep the oldest, the smallest ID.
I have already made the necessary corrections.
It was also duplicated on IMDB

OLD 0 https://www.themoviedb.org/movie/278569-the-collector-allan-stone-s-life-in-art
new 1 https://www.themoviedb.org/movie/402500-the-collector-allan-stone-s-life-in-art
IMDB https://www.imdb.com/pt/title/tt1262021
WIKI

Move External Links
Move Image
Del new 1

TIP: If you want to force the line break, click Space 2 times and then click Enter. Just Space > Space > Enter.

Sorry to see the correct listing be deleted. You left the incomplete entry that on letterboxd has one bad [and misguided] review. The other entry had positive reviews.

You need to complain to Letterboxd so they can merge their entries.

A duplicate entry is an entry created when a previous identical entry already exist. This is never the first entry created.

Thank you. Sorry for the frustrated respond. [ I cleaned it up] I appreciate the information.