RDA projects not upgraded from 8.0 to 19.1
I have recently upgraded from 8.0.1080 to 19.1. When I opened an existing solution I was expecting it to be upgraded automatically however the projects simply have "needs migration". Prior to installing 19.1 I uninstalled my previous plug-in and runtime to start fresh. How do I get my existing solutions/projects to upgrade to 19.1?