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The chords were missing and I could add them again by myself.

Were the chords 'missing' or 'different'?

Exactly what steps did you use to open the EZkeys Track 1CH1.midi file inside BIAB?


BIAB & RB2026 Win.(Audiophile), Windows 10 Professional & Windows 11, Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors