If you’re getting an error trying to import a policy exported from System Center 2012 Endpoint Protection into FEP 2010 using the Group Policy Tool all is explained in this post from the ConfigMgr Team Blog:
“Symptoms:
When you use the Forefront Endpoint Protection (FEP) 2010 Group Policy Tool to import a policy file that was exported from System Center 2012 Endpoint Protection, it will fail with a screenshot similar to the following:
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