As has been said elsewhere:
The runes found in loot are not the same runes found in stores or used in crafting. They are two completely different sets of runes with different internal names. You can look at the def_item_upgrades.xml, def_loot_containers.xml, and def_loot_shops.xml files and see this clear as day.
The runes found in loot are not the same runes found in stores or used in crafting. They are two completely different sets of runes with different internal names. You can look at the def_item_upgrades.xml, def_loot_containers.xml, and def_loot_shops.xml files and see this clear as day.