Questions and answers about ERM scripts for WoG.

DracoLich, everything is great except for one thing: if an artifact grants a spell (for example, an empty artifact from the reserves), and we pick up another artifact that grants the same spell (for example, a living scroll), and then learn THAT same spell in the spellbook through the mage guild, a bug occurs. When removing artifact 2, and then artifact 1, everything is fine, BUT! when removing artifact 1, and then artifact 2, the spell disappears from the spellbook! How can this be fixed, and is it fixable at all?