Lookup by IMDB not working for The Problem with Jon Stewart

Hello,

I just made a request in the Edit Requests thread to add the IMDB ID tt15084142 to "The Problem with Jon Stewart" (link). As you can see, the external IMDB ID has been updated, however, this API request is returning null:

https://api.tvmaze.com/lookup/shows?imdb=tt15084142

Similar ones, such as for Star Trek: Discovery succeed:

https://api.tvmaze.com/lookup/shows?imdb=tt5171438

Please let me know if I can provide more details.

Thanks!