I haven't logged on since 2009 or so and I see that I have missing items that I remember having. Some of the items were things I built which I can't find also. I'd say that the majority of my items are there but I still remember a few items which are not in my inventory. Since I haven't signed on for 5 years, I have obviously changed computers so I don't think the cache suggestion will work. I'm currently using Phoenix viewer if that is useful.