Version: SeeMusic 6.0.5, Windows 2.2 GHz, 64 GB RAM.
Some MIDI files contain Key Signature message from the sf and mi values in the meta message.
Read more: https://midiprog.com/midi-key-signature
In the Note Settings under the Label section, it would be great if you can create a on/off toggle (e.g., called "Auto Assign") to automatically assign Label Key and Label Quality (i.e., the Key Signature) based on the MIDI file Key Signature message.
Understood - I'm in the middle of a couple major feature updates but I will try to get this implemented in the next month or two.