Tyflow inadvertently smooths Building object

[3dsyn]

Hi,
Tyflow keeps smoothing my object although in max and in my created software (rhino) the object is angular.
It's a buidling and I can't have it smoothed like iTyflow is currently doing
Thanks for any help,
File attached
RM
Edit
I tried attaching a 3dsmax file I don't see it attached and now The tyflow forum says 438 kb remaining