[echo]

Hi mate, first of all let me say I hope you don't think I am being argumentative, especially over something relatively trivial, I am just trying to understand your logic, and clear any misunderstanding
In the end what you decide to do is completely up to you and I really appreciate all your efforts nonetheless

What I did was export some test files in Kodi library and check the nfo. Kodi exports the votes like 30000, no comma or character as the thousands separator.

Kodi will export however it is written into its database. I don't know why you are starting with an nfo created by Kodi instead of MC - all of us use MC to originally create the nfos and artwork, and THEN import into Kodi. If the origin nfo contains 65535 then the db will save 65535, if it contains 65,535 then the db will save 65,535.

I have just tested by scraping a new movie, editing the votes to 65535.

Why edit the vote removing the thousands separator? Of course Kodi will then show the vote count without the separator. Have you tried adding the separator to the nfo and then scraping into Kodi?

Once in Kodi, I deleted the nfo, and went to Settings, Video, Export Library, separate files, overwrite old files.
...
So Kodi was importing the votes, and exporting the votes, without a thousands separator.

I have tested several times, various combinations. When using "export Library, separate files", Kodi will write the nfo file with whatever is in its db -if there is a separator it will write it, if not, it wont.

My tests:

• Movie A, Movie B
  
• Both moves are originally scraped by MC. As it is at the moment, MC creates the nfo file with vote count missing a thousands separator.
  
• I edit Movie A nfo manually, inserting separator into vote count making it look like: <votes>456,344</votes>
  
• Import both movies into Kodi. Kodi shows Movie A votes as 456,344 (much nicer to read), kodi shows Movie B votes as 231788 (not very nice to read)
  
• I perform a separate files library export overwriting older nfos - the nfos show 456,344 for Movie A and 231788 for Movie B, as expected
  

Summary:
If you can, and agree, please make sure MC writes the nfos with the thousands separator in the <votes> field.
Thanks again!