It's been a while since I last worked on my level and when I tried to lay some track today I found both the Ribbon Loft Descriptor and the Track rule had been emptied. After re-adding the Leeds Manchester Descriptor and Track Rule I was able to carry on. Unfortunately after simply changing modes and then returning to Network Edit mode the Descriptor and Rule entries have both been lost and I have to enter them again. I made sure I saved-all each time after putting these parameters back but nothing seems to make them stick, something I've had no bother with previously. I also notice there is a small padlock over the icons after I have re entered both of them, which I haven't seen before. Just managed to fix the problem by duplicating both Descriptor and Rule and moving them into my Level. this removes the padlock and they appear to be sticking now.
