Hi,
The "Move all items to" setting is not configurable via GPO. If you want to push the setting out to users, that can be pushed in the PRF file but the users would still be able to
change the setting. See:
http://support.microsoft.com/en-us/kb/836755
As for the "Inbox is disabled for autoarchive by default", this is the default behavior and it's not possible to change the setting via GPO. The AutoArchive settings we can configure via GPO is the default AutoArchive settings we can see under
File > Options > Advanced > AutoArchive Settings. These settings won't apply to those folders that have AutoArchive settings set to "Do not archive items in this folder".
As a workaround, we can try use managed folders to achieve the goal. See:
https://technet.microsoft.com/en-in/library/bb125163(v=exchg.80).aspx
If you need further assistance regarding managed folders, you can post a question in Exchange forum:
https://social.technet.microsoft.com/Forums/exchange/en-US/home?forum=exchangesvrgenerallegacy
Regards,
Steve Fan
Forum Support