I need a solution
I too just ran into the problem described in: https://www-secure.symantec.com/connect/forums/norton-ghost-15-restoring-deletes-system-restore-points
After a restore, I noticed that Windows update indicates that it never installed an update (Updates were installed: Never). Furthermore, hidden updates were not hidden any longer. But the Installed Updates information is still all there, however. Thus it is more of an annoyance than a real problem, but it isn't clear why this should be happening.