Hi Grah

I checked and got the same result. I'm pretty sure I've seen this before too.
I grabbed a song that went from C Maj to Eb Maj in the chorus. I changed the key to F Maj. The notes and the chords changed (to F and Ab), but the key signature still showed 3 flats in the chorus.

Is that the same problem you are experiencing?

(Actually, I have to think that this might not be too difficult to fix, it might just be an oversight in the code that handles the key transposition, a missing step)

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