I was trying to get intersection curve of two sketches. Intersection defers according to selection sequence.
Now if I extrude both sketch as surfaces long enough that they intersect each other and I create intersection curve using this surface result would be different. I thing both should same. How to troubleshoot this?
Actually it gets worse when you have multiple solutions.
I do this a lot for doing tricky fiber optic cable management.
When I get a stable solution, I find the the ends swap* when I edit and regenerate the part.
Best thing to do is to make sure there is only one solution.
* swapping ends... whatever use to be attached to one end of the interested curve moved to the opposite end of the same curve after an unassociated feature was edited and the part gets regenerated. I reported it as a support case. I don't think it ever got solved. This is Creo 2.0 early release.
I guess the intersections for 2 overlapping flat surfaces would be ambiguous since there are unlimited possibilities for the curves.
I tried with smaller accuracy (I used abs 0.0001) but found no difference from yours.