I want to sync these 2 folders

I do

robocopy “arbitrage3” “arbitrage4” /z /xo
robocopy “arbitrage4” “arbitrage3” /z /xo

echo Sync Complete

pause (It prevents the console window from closing after executing the command.)

And some files are simply not copied.

Files that don’t exist in arbitrage4 is not copied from arbitrage3

I think it used to work.