SAP Netweaver IDM upgrade fro 7.2 to 8.0

Hi,

I have some questions regarding the IDM7.2 to IDM 8.0 Upgrade? Has anyone followed the side box approach? Where you able to import all your customization with this approach? Did you end up creating a lot of scripts because of the customized data not moved in ? Were you able to move audit logs from old to new server with this approach? Thanks for answering.