Load/import settings from one project to another? I have created a new startup file in order to improve my workflow.  One example among many others, I've created new Screens Layouts. It really makes a difference. But when I open old saved files, they use old settings like old Screen Layouts. It's time consuming to re-adjust the settings one by one to my new liking. It's also the same problem if I open blend files created by other people, I'm forced to use their settings.

So, is there a way to override the settings of old files with the ones from my new startup file?
When opening a file uncheck the Load UI option.