Hey, I created a Python3 script which allows me to convert tiled maps in CSV format into defold ones (as long as infinite is unchecked and the map doesn’t split the data into chunks.) It still needs a lot of work but it at least accomplishes the requirements of my own project for now. Here’s the code if it’s of any use 
EDIT: Link to separate thread for the script related updates: Tiled tmx (CSV non-infinite) map converter tool