hamad 130
not all upper air routes are coincident with airways [lower down].
If you have some charts look up airway L9 in UK airspace with beacon hops STU..BCN..CPT. The upper air route UL9 is a straight line via DIKAS which is to the north of BCN vor. Also there may be different reporting points depending on upper or lower route.[just as you say].....even when they are coincident.