Aging elders DOWN to young adults?

Yes. To be honest in my Cantrell game save, many of the Paparazzi that hangs outside of Erik's security gates are almost all on the Elder side. He's constantly hit with this Sim or that Sim died, and poor Erik takes it to heart, that I used MCCC to age them down to Adult. With the Butler they had initially, Meha was an Elder. I decided to age her down to the beginning of that life stage so she wouldn't end up passing way too soon. She turned out to be a good ol' gal and she resigned when she was so many days old with no bonus days left. The family decided to carry on without the help.