1. To migrate any data you have to use Forums API.
2. You can create a forum with the following settings
Deny anonymous authors - true.
Create a role where you can add users which you do not want to edit the posts and deny all permissions for this role from Forums module >> Permissions.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items