Directly from Mike:
(1) Site and Layout templates supports disabling of data mirroring (i.e. support copy as new)
(2) Organization, Role, PasswordPolicy, UserGroup always uses data mirroring (i.e. don't support copy as new)
Maybe we need to add a method in the DataHandlers called supportsCopyAsNew...
Steps to test:
- Go to Control Panel > Roles
- Click the wrench icon and select Export/Import
- Leave all options unchanged and click Export. Save the LAR file
- Now select the Import tab and drop the LAR file. Click Continue and Continue again.
- Under the Update Data section, the Copy as New option should be disabled, and the help message is "Not Supported"
Repeat the same checking for Organization, PasswordPolicy and UserGroup. For any other portlets, the Copy as New option is enabled.