Revert back to text to speech, from AI Audio text to speech - HELP

Is there a way to change my voice back to regular text to speech after using AI voices text? I am asking this because it was very easy to convert my text to speech to an AI voice during the trial (that I didn't know was a trial, somehow, I missed that) and I had updated the voices in a couple of trainings. Now, if and when, which will be soon, I may have to edit those text and now I cannot. There was a LOT of text that I cannot convert back to regular text-to-speech which is a huge inconvenience. 

When I right-click and select Audio, text to speech, it wants me to enter brand new text. I shouldn't have to because it was already there.

It seems that this should be a feature to revert back to just as easily as it was to convert to. Unfortunately, the only way to get my original text to voice back is to upgrade, which because of pending policies on AI, I cannot do that the moment.