ABAQUS: History-Output with sets - is it possible to create sets trough points on a specific edge?

Question

i am doing a parametric study in ABAQUS on a K-Joint with scuare hollow sections. Therefore i need to get the displacement between two points, see picture [KT-Joint location dial guages]. The connection area and the partition between the braces and the chord is done and looks like - see picture [K-Joint partitioning].

My Problem: If i do another partition with a XZ-Datum-Plane at the midaxis of the chord and then get the messure point along the surface edge (see picture [Partition with XZ-Datum-Plane]), the measure point will, dependent on the chord heigth, the gap size between the braces or the bracing angel, get on diffrent edges. This causes a rearrange of the edges designation and further the mesh gets disturbed.

Is it possible to get a geometric point (set) on the length of an edge without doing another partition? Or is there another option?

best greeting Lukas

I tried to not seed the edge on the XZ-Partition and make it free. It worked until i changed the geometry.