Err is this a bug?

[Fubar]

I'm just play testing a scenario and i have a question about movement through types of terrain.

In this scenario i am attacking a coastal town that has a large section protected by high fortified walls, now i thought that terrain type was impassable but as you can see from my screen shot i managed to move two non-engineer infantry units through this obstruction. Strangly though the rest could not move through and as you can see had to walk the long way round.



I have looked in my digital manual at terrain types and it says....

5.25.36 High (Fortified) Wall
This represents a very thick wall (usually poured concrete). High Wall
hexsides cannot be crossed by any unit unless that High Wall hexside
has been breached by Engineers.

Has something changed with 1.04 thats not mentioned in the manual....some sort of limited movement allowance over a high wall maybe?

Yours most confused. :conf: