So I own TSW2, and it has the Cane Creek route, Sand Patch Grade, Schnell whatever Kohn, and London Bakerloo. Are those supposed to be available for TSW3 somehow? I can't see them in "games I own" (Xbox Interface for PC) or anything. Guessing there is some trick to it.... Thanks.
All I had to do was go into the XBox app on PC, select TSW3, then it will show a list of add ons on the main page. Select Show All Pick one of those routes that you had in TSW2 and it should say that you already own it and give you the option to download it. If it still shows a price at this stage, don’t proceed as it will charge you. The exception to this is if you had TSW2 as a physical disc. Then there is a process to go through which is in the TSW3 FAQ on the DTG website. If none of that applies, then raise a support ticket. They will probably ask for proof of purchase, but they can sort out any missing DLC.
You might need to search the individual DLCs and install them. For example, open this link for SPG. Then this for BKL. And so on, you get the idea.