The same problem exists for macros in general. You can set the IR routing using the wizard but you can not select a macro, a group of macros, multiple commands within a macro etc... to change the IR routing. This would be very useful for scenarios with multiple like devices especially with channel macros.

It would be very cool to select device codes by the page or on multiple pages and change the routing regarless if they are single commands on a button or within macros. It could similar to the IR code search and replace feature OR the IR code search and replace feature could be modified to include IR routing and and have the option to apply globally (as is currently does) or locally (to particular pages).