title_body: Accessing Clippings Deleted from MyClippings.txt
upvoted_answer: Another answer suggests they are available on a web interface, but only if they are books sourced from Amazon (and that you keep it connected to the internet).
  
  If neither of these cases apply to you I may have serendipitously made a starter of a solution to the issue; on my Kindle Paperwhite there's a file under /Kindle/system/userannotlogsDir/ titled annotation_&lt;Unix_Epoch_timestamp&gt;, which I assume is used to determine where the shading for your highlights shows up (I don't know if this file sticks around on Kindles that get connected to wifi). If you download this to your computer, I wrote a perl script to format it as a proper .jsonl file.
  
  From there, contentReference.guid is a permutation of the book title, and position.begin &amp; position.end define the start and end of a highlight by the number of characters (might be bytes) in the ebook file, you may be able to find where your highlights were from there.
  Another bash script to generate a spreadsheet of byte lengths of may help to find the exact location of the quotes by dividing by the total length, but it's not always 1:1 with the Kindle's percentage calculation (I suspect images embedded in the files may be the culprit).
  
  Hopefully that's enough to get you started! Sorry it's not as simple as a toggle in the main menu.