Hello, I was working on a project freshly started on 4.19 – After 3 weeks of work, this morning, I ve updated a static mesh model. This broke the whole child actor hiearchy. I have a static mesh, embeded into an actor (let s call it FA) that has a HUGE BP logic. In begin play, defining the static mesh through an exposed static mesh variable. Then, a top (let s call it SA) actor that includes FA as a child actor. Changing the exposed value of the child actor was updating the mesh in SA. Since I have updated the original static mesh, I can t update FA s static mesh through SA. Even creating a completely new SA dosen t work, the child actor won t update. Tried deleting (in FA) the static mesh variable, tried deleting the static mesh itself nothing solves the problem. So I might just have to completely redo FA. Wich now became really complex because of all the intersections between FA and the whole project. This is seriously scary, I mean, seriously.