MCEBuddy has some very powerful tools at your disposal.
If you filename has extra characters like 23_Carnival Eats-S04E14(2).ts then you can write a custom regex in the Metadata correction page to correct the title to remove the extra leading characters and then select the IMDB overwrite option and it will process your metadata just fine. @mike808 may ideas on additional regex options.
Use today’s build of MCEBuddy since it has some improvements to the overwrite option