Has anyone noticed that if you click on File > Properties while in a drawing, the Summary Information Table does not have a save button! So, if you want to make changes, for example add a PartNo., you can add it but there is no way to save it! It seems SolidWorks does not automatically save any changes you make to this table. How do I fix this? Seems like a bug in 2016.
There was never a save button but you simply click on OK to apply the changes. Works fine for me.
Are you doing the same steps as in attached video?