Fix errors in csv and export to fit?

First of all, thank you so much for this. The Moov was perfect except for its lack of sync and export for swims.

Well, almost perfect. Sometimes it messes up the distances and thinks that I did a lap when I was just walking towards the pool and such. It would be easy to fix this in the csv file, but is there a way to export the corrected data as a .fit file?