“user_pass” does not work

In the documentation, it is written that for the password field, you can use either a column named “Password” or “user_pass”. I first used “user_pass”, but it didn’t work — I was not able to log in with the password I had defined. As soon as I used “Password”, it worked.

My understanding is that “user_pass” should be used when exporting users from one site and importing them into a new site while keeping the same passwords. Is this right?