Hi, something I learnt a long time ago is to go into CMP, and search for your downloaded rolling stock, and then one by one go into the config.txt for each one and type on the username line the following for example :
username "BNSF flatcar"
now type in the following ;
username "aBNSF flatcar" or "aBNSF flatcar - Steel, Lumber USA"
when you go into surveyor you can see that all rolling stock with a small letter "a" appears first at the top of the list, then b then c then d, etc, etc. You can put whatever letter you like, or even country code like US or UK or AU, and even sort them by cargo type or whatever you might find helpful to sorting thru the hundreds of wagons and locos you've got downloaded. It's perfect for locating types of specific cargo wagons straight away, without trawling thru all your downloaded stuff, and I'm sure that you can do the same with the config.txt on properties ( logs, steel coils, etc ) so they show up similarly in surveyor.
It might be a lot of work initially, I always do it when I've downloaded stuff off the DLS, but it pays dividends when it's all been done. Might not be everybody's ideal way of doing things, but it's worked for me OK.
Cheerz. ex-railwayman