I downloaded TSW3 and imported my profile. The main game trophy list is almost complete, I just have to complete a set of route collectables. But for addons, none of these seem to work. For example, SEHS - Complete all training. You can see from the below screenshots that I have, but don't have the trophy. Interestingly it has worked for the new German route, suggesting that it will only work if achieved in the game, not after importing (unlike the main trophies which all appeared automatically)
Those three tutorials only relate to the route itself, have you done the tutorials for the 375, 465, 395 and 66? They count towards that trophy too.
You will need to start a new profile to earn TSW3 trophies (tutorials + scenarios only) on TSW2 routes including SEHS. Mileage achievements should unlock (using imported profile) if achieved already from TSW 2, once you've driven 1 mile or sat in said train.