I've used this command to export filter and rules on server A

zmprov ga myaccount@mydomain.com zimbraMailSieveScript > /tmp/myaccount_filter_rules.sieve

but now I don't understand the correct way to import file in server B

On wiki at page Email Rules Migration - Zimbra :: Wiki at paragraph "Processing a Sieve script and inserting it via zmprov" there aren't good example

Thank you all