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.
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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.