Outlook OST vs NST

[Navar]

I am currently using OSForensics V10 build 1016.
I am need to view a Outlook NST file which is the O365 version of a OST file. When I open the NST I get no emails like I would with a OST file.

[David (PassMark)]

Do you have an example NST file. Or what was the procedure used to create one?
I was fairly sure Outlook still exports in OST format.