I have a C# program that update NX Expresions to modify the position on some parts created and positionaded with KF but on some parts the Origin Position get "stuck" after the assembly is saved and reopened. there is always a offset and the origin instance of the part apears in color blue (edited) and I could fix the issue is I delete the instance wich return it to default p(0,0,0) but I have to doit in all the parts with offset.
some idea of what could be the problem? it happen just in some parts not in all.