Sims will no longer obsess with heirlooms as soon as you have designated an object to be an heirloom. By default, the would wander off at any time to think about the Sims who created the heirloom.
Required Packs: Life & Death
Compatiblity: Will conflict with any mod that alters these tuning files:
heirlooms_RememberSim, 381358
Creator website: https://www.seebee.de/sims4me/