zbrush to maya texture problem

[Evans]

I import an obj in zbrush from Maya(I have attached an image of a cube just to show you the problem). After I subdivide the cube(at least once), when I return to subdivision level 1, the topology has changed. This results in distorted normal maps around the model's corners and badly stretched diffuse maps. The weird part is that this started happening last night(using Z4 or Z4r2 does the same thing) and I didn't change a thing.

Top picture shows the cube's lvl 1 in zbrush after having been subdivided while the bottom pic shows the object in Maya with it's proper topology.

Any idea why this is happening?

P.S.

I tried the Morph target solution(provided from another forum's monterator) but it doesn't fix the problem. Sometimes it makes it worse.


Edit 1: Sorry, just noticed that I posted it in the wrong section. I would appreciate it if a moderator could move this to the appropriate place.