Can you show us a screenshot of your phone with this build number issue? Also, can you list what steps you took to flash the CN version on top of the Global version?
Normally OTA update won't work when switching the OS from Global to CN and vice versa unless you flash both slots to be on the same version.
then flash using twrp for slot a and b
boot > system > vendor
after that wipe/davilk
change to slot a
flash using twrp
boot > system > vendor> and flash disableforceencrypt
start system without install twrp
when im boot using slot A
it's shown internal error
i have send the attachment file hope you can help me, thanks