Recover deleted audio from unsaved project

Audacity 2.0.0
Mac OS Mojave 10.14.4
In a town an hour away from me I recorded on Wednesday morning 4.3.19 a professional reading a closing message for an upcoming convention.
I thought I saved it but the file saved on my Time Machine from 4.3.19 only has a part of the entire recording. I think I saved at one point in the recording but not at the end. I edited in the file yesterday and I believe the entire recording was there when I began editing. I believe I copied the last part to move to another track, got distracted, and copied new material before I pasted the previous material. Is there anyway to retrieve the parts I deleted while editing? I do not see an Audacity folder if I go to /Library/Application Support/audacity/SessionData. I really do not want to have to re-record if possible.

I’m not sure I followed that, but there are a couple of rules. When you close Audacity, it wipes the UNDO. There is no such thing as Edit > UNDO when you open a show cold. Was there a Time Machine backup between the time you read and you realized there were parts missing? That’s your only hope. Do you have Auto Time Machine and what’s the interval? If Time Machine doesn’t have the full show, then that’s the end of the world.

It’s a terrific idea to File > Export > Export as WAV (Microsoft) 16-bit sound file at the time of reading. That’s your perfect quality protection backup. After that you can do anything else you want. From that point forward, it doesn’t matter what happens to the edit or Audacity Project, you always have that original reading so you never have to read it again.

Without any of those, you’ll be preforming it again.