About Importing an On-prem Web Policy
You can import the rule sets of the web policy that you have configured with Secure Web Gateway (On Prem) to a cloud environment, where you can continue to work on these rule sets with Secure Web Gateway (Cloud).
Importing on-prem rule sets to the cloud environment replaces the rule sets that you have configured with Secure Web Gateway (Cloud) before. But you can still restore them if you want to return to your previous web policy for cloud users.
For more information about how to complete this import, see Import an On-prem Web Policy.