Hardpoints are standardised with standard types
if the older one had a Lightweight Hardpoint and the upgraded airframe Had a Heavyweight pylon then this is true
but you can still put all Lightweight Hardpoint weapons on all Lightweight and Heavyweight Hardpoints and you can still put all Heavyweight Hardpoint weapons on all Heavyweight hardpoints
but, it doesn’t matter it you can mount the weapon there, what matters is it the Avionics can use it there
if it wasn’t like this and Gaijin would accept mere Mechanical mounting then the Eurofighter could carry Twin AMRAAM rails on all Hardpoints including the belly one