QUESTION Migrating old slugs with underscores and caps

[Edward Martin III]

The cheater way that I thought of would be to drop a list of server-side redirects, so "Projects_Banana.html" simply gets redirected to "projects-banana.html" but after 15 years, a person gets used to their URLs, y'know.

Besides, that would only be one-way.

It was my hope that -- because underscores (and case differences) ARE valid URL characters -- that maybe I had just screwed up a configuration setting somewhere.