You can also try professional SYSessential NSF to PST Converter software that helps you to directly convert NSF files to Outlook PST file format including all emails, contacts, calendars, tasks, notes, and etc. items along with attachments. It allows you to batch move unlimited NSF files to PST file format in Outlook 2019, 2016, 2013, and other below versions.
Read More: https://www.sysessential.com/nsf-to-pst-converter/