Hi g_kalkman,
It’s most likely because there is a custom MIDI map programmed on your H9. Pair your H9 to the H9 Control app. Open it, if you click the Pedal tab, click MIDI Settings, click Program Change Receive Map, assignments on this page may be off in that PC0 could be programmed to change to preset 20. PC1 changes to Preset 1.
By default,
PC0 should recall preset 1
PC1 should recall preset 2
PC2 should recall preset 3
Etc.
Regarding the bypass state: Try navigating to Preset 20 on the H9. Does it recall in bypass? That’s because the preset may have been saved in bypass mode. Activate it and save it again so it recalls activated.