Haven't got very far yet, but happily haven't found many that aren't going where they should either.
I've only clicked the "Forward To" button and have used ">" below.
Inwald
Pompeii > Crane: Button says SPIRALWALZEN.
Set 9439 > 11414: Button says and returns to Inwald.
Set 12032 > 8820 Crane.
Reich
Victoria: No > button. Only < B2571.
Set 8998 > 9020: 9020 not on the side-bar. Forward To button goes to the top part of 8998 and from there > 9023.
Hope this helps, will do more later and let you know what I find.
Dave.