The 29 free DLS routes with "California" in their names are for Trainz build 3.8 which is Trainz Simulator 2 (Mac) and above, including T:ANE and TRS19.
Routes build for T:ANE should work in TRS19. I have had no trouble importing T:ANE routes into TRS19 - but this is not to say that there may be one or two that do not import well.
The FCT is only used to download from the DLS, it has no effect on anything after the download has completed. All that happens after it expires is that you will be unable to download any further routes at the higher speed, unless you renew your FCT. An expired FCT has no effect on anything you have already downloaded.