Hello Charles,
No, I wasn't using that. I didn't realize that was a separate option. I thought Kovid was just talking in general terms. But I just tried importing a book previously saved to disk using that menu option and it made no difference. The long text custom data field shows up, but the short text fields will not.
Am I the only one experiencing this issue? I can't imagine why.
I have the latest version of Calibre installed and am otherwise not seeing any issues with how it runs.
Also, keep in mind if I simply copy a book in the main library to a secondary library all fields show up!
Any other ideas?