My Outlook which I just used to upload my PST file to Office 365 is now showing up many of the subfolders in the inbox as blank but states: Click here to view more on Microsoft Exchange instead of just showing the contents that I just uploaded.

If I click the Click here to view more on Microsoft Exchange text then the contents appear as fine.

Why is this? Should I just wait for it to repopulate the folder or should I just start a new Outlook profile and download the data afresh?

It just means that you have your Outlook set not to keep data as long in your cached file on the computer.

https://portal.office.com  and open the web version of Outlook you will see everything.

If you go into Outlook and change the settings to keep all data (rather than 1 year or 3 days etc.) in your cached file, you will see everything in the folders once more.

This is done under File > Accounts Settings > Account Settings > Double click your email > Slide the slider all the way to the right.

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