If that original license expires (for example because the computer it came on stops working), so does the upgrade. If you purchase an upgrade, you are not allowed to use the original software version anymore.
Si esa llicencia orixinal caduca (por exemplu, si'l to PC con llicencia del fabricante yá nun furrula), tamién finen los anovamientos. Si merques un anovamientu, yá nun se te permite usar la versión del software orixinal.