I ran the WordPress Updates as normal but found one plugin had taken some of the free features and moved them to the premium version. I needed one feature and started looking for the previous version. Turns out the WordPress repository keeps them all available.
On the plugin page look on the right side under the initial stats and click Advanced View. Now scroll to the bottom and you’ll see a new section called Previous Versions with a drop down menu listing all the plugin’s versions available for download.