Well. Damn. There you go. Follow the process in my first reply but instead "rule_name" of Character:UnmemSpellsOnDeath to a "rule_value" of false as Kingly stated.
Never was asked to enable/disable to go looking for it. However, it's not in the wiki (at the time of this post).
http://wiki.eqemulator.org/p?Server_Rules
I'd add it and more, but, never got approved so, there ya go.