Not sure if I got you right, but if you don't want to reload manually, you could probably refer to weapon_upgrades.xtbl too.
For example,
<Weapon_Upgrade>
<Name>Pistol-PoliceLvl2</Name>
<Flags>
</Flags>
<_Editor>
<Category>Radial:Pistol:Pistol-Police</Category>
</_Editor>...