Your network contains a production Active Directory forest named contoso.com and a test Active Directory forest named test.contoso.com. There is no network
connectivity between contoso.com and test.contoso.com. The test.contoso.com domain contains a Group Policy object (GPO) named GPO1. You need to apply the
settings in GPO1 to the contoso.com domain. Which four actions should you perform?
To answer, move the four appropriate actions from the list of actions to the answer area and arrange them in the correct order.
Select and Place:
Answer: 
1. Run the copy-gpo cmdlet
2. User removable media to transfer the contects of test.contoso.com to contoso.com
3. Create a gpo in contoso.com
4. Run the import-gpo cmdlet
http://technet.microsoft.com/en-us/library/ee461050.aspx
http://technet.microsoft.com/en-us/library/ee461044.aspx
https://technet.microsoft.com/en-us/library/ee461052.aspx
there is no link between two forest
Shouldn’t there be some sort of migration done? I mean, you’re going to have some GPO settings “looking” for test.contoso.com when you need to migrate those settings to just contoso.com. Just my opinion.