Thanks for the fixes on the tree. There were a couple of instances a while ago where you could enter an era with something other than the intended gateway techs, but I fixed those. I will have to review it to make sure, but in general, if none of the X positions were changed, then it shouldn't cause problems for any of the new future era material. There are a handful of other things that I know to be out of order and will need fixing, e.g. Cislunar Asteroid Mine being available in an earlier column than even the cislunar colonies.