From my reading and research, I read that procedure you listed and some described hearing the clutches reset, others on our forum here said it did nothing, no sound or no difference. BMW Logic7 seems to be the reference for your ZF box and they claim the throttle pedal--> transmission adaptations reset procedure is only an old wives tale.
Everything about your ZF 6HP26, 6HP19, 6HP28 transmission issues | BMW LOGIC7
I did find this video for the ZF gearbox and a chart listing the adaptations reset procedure but honestly, I am no expert and am hoping to learn more from this thread.
https://www.youtube.com/watch?v=nN78ukXXF_o
