WickedWhims Sims4 Statistics Question

[Reddog69er]

WITH THE EXCEPTION OF THE SIM I AM PLAYING !! Any time I add buildings or sims to my game all the statistics clear out of all the sims in the world. Also when a sim ages up there statistics clear out. Is this a glitch or is that suppose to happen ?? I would like it if the sims stats did not clear out. But if it is a glitch then is there a way to fix it ??