I upgraded a clients test system from Microsoft Dynamics GP 10 SP3 to 2010 R2 successfully on the main system such as installing the main client and upgrading the system and company databases.
The client has a few modified reports on the system which needed to be brought across to Microsoft Dynamics GP 2010. These reports were exported from Customisation Maintenance (Microsoft Dynamics GP menu » Tools » Customise » Customisation Maintenance);