Are you trying to replace the faulty trees within T:ANE?
If so that won't work. You need to do the replacement in TS12 first then import the route into T:ANE. If you plan on using Speed Trees, there are some M:Ultra Trees which will do a direct replacement in T:ANE as well as a bunch from RMM. The plan, otherwise, is to use billboards such as the Forest series, or Clam1952 CL-Trees, for example.