Restarting entire game to reload local UI mod

I’m trying to mod some of the in-game UI positioning. I’ve created a folder for my mod under local with the file structure “\game\ui_myth\content\ingame” and placed copies of the HUD_MouseResources.xaml and HUD_AlternativeMouseResources.xaml files extracted from the BAR there.

I’m able to make changes to those files and then see those appear the next time I start the game. However, it looks like I need to restart the entire game each time I make a change in order to see it.

I’ve done the same thing in AoE3 where it was enough to start a new skirmish match and see my changes right away.

Was this an intentional change in AoM? Instead of taking 10 seconds to see changes in effect it now takes over a minute, which significantly slows down the process, particularly since it involves a lot of trial and error to figure out how those files work exactly.