MIDI Export Volume Discrepency

[wallh4x]

Hi everyone, I have an issue relating to MIDI export in OpenMPT.

I've begun by opening a .mid file (MIDI_ORIG.mid) and making no modifications to it, then using the MIDI Export feature and saving to MIDI_EXPORT.mid with no changes and default settings.

Upon opening MIDI_EXPORT.mid in OpenMPT, the volume set lane has been significantly altered despite no changes being made to either the input or output format.

Does anyone have any advice on how to remedy this issue? Any assistance would be greatly appreciated, I've attached screenshots and a zip of the .mid files.