Add a checkbox when creating a research list - "automatically remove deceased individuals? Y/N". This way if someone uploads a selection that contains deceased IDs in order to populate a research list, the deceased individuals won't be screened. Also, when individuals are marked deceased, they should automatically disappear from any research lists where the box is checked. This would be helpful for research lists that are used for prospecting. And if a research list is used for recording a specific group of individuals (not prospecting), the box could remain unchecked to allow any deceased individuals to remain on it.