So PDS saves in a CSV format.
Did it really work for you? For me not only did it hit the 1000 indexing limit, but the CSV actually came back truncated so I actually lost content.
Edit: but I see you got it from a different github than I did, hopefully yours has that bug fixed.
What I did is use @trent 's reddit-migration script, with some modifications to save my content in a plain text file.
Then I am slowly going to find magazines here in the fediverse and slowly repost my content. I've already done so for /m/Animorph for example.