all of my programs use INI files that you can simply copy from the program directory (or replace)*; though there are a couple of cases where there is an additional settings file. but regardless, they all use files to store settings, so import and export is not critical in my mind because it can be done manually.
*Clipboard Help+Spell uses a database file for efficiency. While CHS includes a backup+restore function, i really do want to add an xml export function for easy of transfer.
by default, all these ini files are in the Program Directory, right? So, unless I specifically change it, you don't add any files to Application Data or anything? i don't see any.