Hold it, I see an new wrinkle. There appears to me CC changes in the midi which is changing the patch on the fly. Now where oh where in BIAB do we view and edit these.... these menus can drive you crazy....

Here it is.. The # sign. The changes to change patches are hard coded in the midi data. I suspect you did not do this, but who ever made this midi file did.

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BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6