They look identical on the inside, one says 25 (Reloaded) and the other one says 19 (Original)
I’m unsure what the 25 and 19 are.

Viewing post in CSV Files referenced from file_set_live not working properly?
Ah, I see now - you’re assigning the temporary grid into the variable instead of copying cells from it.
From documentation
“csv”: provides file contents as a CSV grid (using load_csv). Similarly, the grid will be automatically deleted afterwards.