200D to 300D Configuration Migration.

Hi All,

We have successfully migrated our existing configuration to new fortigate 300. But, 1 big issue is the policy in 300d now required "Name" which in the previous firewall is not required. I Would like to seek your assistance regarding this issue. 

What would be the best and easiest solution to name all the configured policy rather than edit/putting it manually and one by one? 

thank you and Regards