I recommend reviewing the 7.0.1.03 to 8.2.1 migration guide found on the McAfee download site. Log in with your Firewall Enterprise grant number and follow the link. The migration guide discusses the analysis report. This report will advise you what changes your policy will undergo during the upgrade. It then provides you an option to make changes to your existing 7.0.1.03 policy before upgrading or proceed with the upgrade as-is.