Andrew, you're right, that file is kind of a goofy thing. If I add a print preset the timestamp on that file changes to the current time/date. However, if I replace it with a version of it with different presets, nothing happens. If I remove it from it's location, nothing happens. The printing presets remain as is. If I delete the printer and reinstall it I go back to having no presets. At that point, if I put a copy of that file in the proper location that has presets and restart my computer, I get all the presets back again. On that basis, before deleting my printer in the future, I'm going to duplicate that file to my desktop and then replace it after reinstalling the printer. On a side note, all of the custom roll paper sizes that I've created remain available no matter how many times I delete and reinstall. I assume those are stored in a different location for some reason.