MySQL users not visible after import
Best is to to : show grants for user@'10.%' ;  each user on the original server.
Then apply them to the new.

Or you can use pt-show-grants -hhostname -u -p which will list all the grants.
You can do that in one line of code:

pt-show-grants -horigalHost -u -p | mysql -hnewHost -u -p