In the rules, Warping isn't a problem for enchanted items. However, I started a debate in the ArM forum on whether or not a permanent Ring spell would cause Warping: https://forum.atlas-games.com/t/magical-lighting-in-labs/8728/1
So we need to rule on that before we decide on how we're going to do it in the labs, though obviously your method would pose no problem.
Scott