I recently migrated a 2010 Exchange server to 2016 Exchange. The public folders did not come over cleanly so I ended up exporting and importing them since there was only one and it was the company contacts. However I was only able to import them into a sub-folder. Now I'm not able to get that sub-folder to show up in the Favorites at the top of the Mail navigation pane in Outlook 2013/2016. I can add it to favorites but it doesn't show up in the Mail favorites section. If I add the parent public folder to favorites then select Show in Favorites, it is displayed however it doesn't provide a link to the sub-folder. This was not a problem with Exchange 2010. Can any steer me in the right direction?