More weird behavior

Created MIDI files in studio ported them to the laptop…they playback in the wrong key Min 3rd higher.
Check usual suspects . . . MIDI Modifers etc…Nothing.
Look in both the Key and Score Editor the notes are at the correct pitch… gave up came back loaded the same file in the studio computer…plays back in the correct key.
I’m dumb founded


What player does it play the file on the 2nd computer? Could you use any MIDI Momitor to check, what data is sent out of the MIDI File?