Using
file --mime-type -k exampleFile.ica
I can see my entry as the second item, but even after adding `!:strength +250` it doesn't override the default, which is application\x-wine-extension-ini
I even went so far as to remove all lines containing x-wine-extension-ini from the magic file but the assignment persists, which makes me think that either file no longer looks to /usr/share/mime/magic.mgc for the only place for mime types, there's a bug, or something else I haven't considered.
I'm happy to fill out a bug report (search through bugzilla I don't see anything) but didn't want to if there was just a change that I missed.