Max,
Wouldn't a button "reload code replacements" in ingest window be more useful, and actually requested feature?
I think automatic is far better than requiring you to both change your files and also remember to click that button. Also, once we were to add that button to Ingest, it would have to be added to a number of other dialogs (Save as, Copy/Move, Upload, Live Ingest, Metadata dialogs, etc.)
-Kirk