We are in the process of organizing sub-accounts in our Canvas instance. There are about 200 sub-accounts, but some of them have wrong formatted SIS ID. We have exported the lasted Accounts csv file, and corrected all the SIS ID. So if we simply import this new Accounts csv, is it going to affect the courses with "old" account SIS ID? If yes, what would be the best practice to clean-up the sub-accounts? Thanks in advance!