I went back to pre-SP1 and pre-hotfix 1. Then after the release of hotfix 2, yesterday I gave another try. In Surveyor, when I select a table, the building one or the locomotive one, sometimes the response is so loooong, I'm loosing much time on waiting. I did not have that problem in 49922.
So if your working in Surveyor, you might want to wait. As I did not play much running trains since 3 years, but always worked on a route. Post-SP1 brought many problems I did not have in 49922. In my case, I did not have problems before, now I have. The only thing I like in SP1, is the new filter that gives the possibility to know which installed asset are not on DLS. So I might go back AGAIN to build 49922.
Rail4Pete