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Clark: When did we drift from missing comics to missing persons?
Lois: We course-corrected Change the case type?

when our thief's aunt filed a report. Pressed charges or report him missing.
In this episode there's a kid that stole a comic book and no one heard from him ever since.
His I.D. was flagged in the Planet database as a potential story. He was
going to be interviewed by the paper? He kept sending letters to the post
office addressed to "The Blur."(Superman).
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MadhulkLois: We course-corrected Change the case type?

Here "course" means "direction". In other words, they corrected the direction in which their investigation was heading (I assume they're conducting some sort of investigation).
Madhulk
when our thief's aunt filed a report. Pressed charges or report him missing.

In this episode there's a kid that stole a comic book and no one heard from him ever since.

It could mean "filed a missing persons report" if that makes sense in context.
Madhulk
His I.D. was flagged in the Planet database as a potential story. He was

going to be interviewed by the paper? He

Potentially. They had his name on their database. They thought he might possibly make a good subject for a future story in the newspaper, but they hadn't necessarily decided to write one.
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Thanks, Mr Wordy!