Recently we had to convert a PDF file to MS Word so that we could benefit from the Track Changes feature in MS Word. The proofreader did not want to use the commenting tools in Adobe/Acrobat because he found them inefficient to propose changes in the text. (Yes, he could make direct changes, but it takes much more time.) We had a LaTeX source file and faced the common challenge of turning this into a Word file. I remembered that Adobe/Acrobat can export PDF to Word files, but as I have experienced many times, the output did not satisfy me at all. I also tried pandoc, but it turned out that we used bits of LaTeX pandoc cannot (yet) handle. When checking the output, I discovered that Word can open PDF files. We quite liked the output and had to tidy up only a few bits and pieces to have an acceptable Word file.
We could have avoided this challenge by using markdown and pandoc to start with… my usual approach these days.