I recently upgraded a user from Office 2013 to 2019 (and migrated them to a new computer) and specifically they use Outlook a lot. It's a well known fact that "Microsoft Office Outlook 2007 and earlier versions store the AutoComplete list in a nickname (. nk2) file on the disk. Outlook 2021, 2019, 2016, 2013, and 2010 store the AutoComplete list as a hidden message in your primary message store." now I created a new Pst file and then used the Outlook import pst file function in Outlook 2019 to import the entirety of the old Outlook file into the new. However a major complaint by the user is that their autocomplete list in the To field of a new email appears to be empty and is missing or wasn't imported, so how can this be fixed? How can I import that autocomplete list from the old Outlook Pst file to the new Pst file?