Route with train change in country of residence allowed?

The route is through my country of residence, but it’s not an inbound/outbound journey

Hello,

I’d like to travel from Wrocław Glowny (Breslau) to Prague with train changes in Zgorzelec, Goerlitz and Dresden. The route is through my country of residence, which is Germany, but it’s not an inbound/outbound journey. As far as I know it’s not allowed. Is that right? Do you have any suggestions for another route? 
Thank you in advance

Joana