'Self-pointing' instance link because of a measurement

Hello all together,

Being new to this community I'm not sure if and how it is possible to attach a CATIA V5 part , so I'm starting to describe it verbally;

I got a .CATPart which contains a measurement of a surface (area).
This part has an instance link pointing to itself, which, of course, doesn't make sense (check via Edit-Links).
Having checked so far: It does not occur in R24, but it does occur in R26 or R28.

Anyone got an idea what that means?