I think it ran -- it acted like it was going to happen ("Apply") but nothing on the screen to inform of a result and I don't know how to navigate to it. Any help appreciated!
Unfortunately Imy Imac (2013, 10.15.7) seems (after my backup attempt [and I hadn't check beforehand]) to lack the last 2 "nodes" in your specified navigation (MobileSync and, within that, Backup). Should I have created empty versions of them beforehand? In any case, any advice/info much appreciated. Thanks!