Audio Pitch Changes After Flattening Arranger Track in Cubase 9.5


Why would the pitch of some audio events change after flattening the arranger track in Cubase 9.5?
This only happens in parts of the song that have no chord track chord specified.
Do I have to specify a chord track for each part of the song before flattening?

Cubase 9.5
Dell Inspiron 13 7000 i7 64bit

Thank you,
Duke Townsend of The Cardboard Palace

Hi and welcome,

Does the Audio track follows the Chord Track?