Help using migration assistant moving mail from PC Outlook to new macbook air

According to this article: Move your data from a Windows PC to your Mac

https://support.apple.com/HT204087 it should be possible to move all data from my pc running Windows 10 including my mail data from Outlook 365 (32bit) version 2101 to Apple mail in our new MacBook Air M1 running Big Sur 11.2.1. Everything moved successfully EXCEPT mail accounts and messages from Outlook. The actual .PST file (less than 2 GB) did transfer to the documents folder but did not "migrate" into Apple mail and of course Apple mail won't just import a .pst file. Has anyone had this problem or know a workaround? Thanks in advance.