i did pass the site you suggested to our ProE-modeler long ago, and he found this very helpfull.
So i think the ProE options were allready set to these settings. Usually we do not have any problems between ProE and Alias.
Also it not ProE native geometry. Its imported into ProE from an Parasolid file created by UG or Solidworks i think.
So since i dont have ProE, i cant test this atm.
But i allways keep my construction options when importing geometry. I did test this in the past, but couldnt see any change in the imported data...
Do the construction options actually affect the way geometry is imported into Alias? As i understand it, construction options only affect geometry created under this conditions. Squares created with loose tolerances are not rebuild when you tighten the strings...
Couple of observations.
The trims in the surfaces in question is parallel to the iso-parametric lines. i.e. if shrink surfaces were switched on while importing, many surfaces might have come with natural edges instead of trimmed surfaces.
Now that you already have the geometry in hand, you could do a trim convert of the whole lot, before detaching.
Some CAD packages like ProE some times extend the surfaces and trims it back while exporting, depending on the options.
Tolerances other than the import tolerances can affect operations like un-stitch stitch operations and trim /untrim operations.
Some CAD packages have COS defintions which are in-compatible with Alias COS definition... in my experience COS of rational character and degree 2 is not supported properly in Alias.
Hope it helps.
Anyway thanks for the uploading the file... more food for though for Alias developers..