Well in Infuse, we know that the data is from TMDB, we can add or edit by self on TMDB if the local file on Infuse cannot get metadata from TMDB.
What if some shows or movies don’t have metadata on Trakt, what can we do?
Maybe I build item on TMDB so Trakt can auto fetching it?
We also use TMDB data. You just need the TMDB ID and, at the bottom of the website you have the import option.
You can see the import options here:
Also, if there are any missing information on any show or movie you can edit on TMDB and after a few hours refresh the show/movie’s page and we’ll get the updates.
Just to give a bit more insight into the process: if you’ve just updated a show on TMDB and hit the refresh button of the show on Trakt, you might (most probably won’t) see the results propagated right away.
That’s not because the manual syncing mechanism is faulty, but because TMDB itself needs a bit of time from the moment you made the changes to the moment when it propagates the information further to the API (which is then consumed by Trakt when you manually hit the refresh information button).
Just like @Sonply said above, give it some time and your contribution will be visible on Trakt 
