At the current I have pulled them down. After looking at them I felt the track was old and out dated. With in 48 from this message I'll have them back up. If you like you can check back on the SAXT forums or I can personally let you know here.
To answer the second question, I got a wild idea some years ago to help those that new to trainz. so I created some boards with only two tracks on them. There were four different boards with curves on them and four with straight sections and crossovers on them. The idea behind this was that they could merged together to make a route of any size, and to give the new user a chance to explore trainz. Then they could add their own scenery. Now I know that may seem pointless, but it was my attempt some of the newer younger members. Being as such there we no scenery installed, I never uploaded them to DLS. I hosted them on SAXT. Which is what I'll do with up graded sections.