There I was playing my Pahlavan Campaign beeing at war with noone but the AS tho my alliance with the Saka rauka had just broke up and In constat fear of a nomadic invasion from the north before I'm finished conquering the remaining free provinces, good for me the saka are at war with the bactrians and are somewhat occupied killing of my ally(If I would declare war to the Bactrians my alliance with all my other friends would brake up ;) ) anyway I'm sitting there checking though my settlements and get a shock when I saw the bridge near antiochia margiane:

on second thought: Those are not nomands, those are Ptollies, my allies.

they did not attack me just wandered through my entire empire. not enough of that, a year later one 5 star FM sits on the same spot. another two years later It's an other Ptolly army.

HOW IN THE NAME OF ZEUS AHÛRÂ-MAZADÂ DID THEY GET THERE?!?! they are not even at war with the sakans (or anyone but the AS)