Recently, some people have been reporting problems removing hearts from
their cache. If you are in this group, try to OUTC OLD_HEART. When you
do so, they should change into a new heart object that is being used for
Reanimation, which is what you should have anyways. This should solve
the problem.

Penned by my hand on the 10th of Slyphian, in the year 236 MA.