I need advice.
I need to transfer the data "Date" from the original files (folder 1) to the converted ones (folder 2).
As a result, folder 2 still has the conversion date.
(https://i.postimg.cc/wyPqtZgq/Sn-mka.jpg) (https://postimg.cc/wyPqtZgq)
You command should be
exiftool -TagsFromFile C:\x\1\%f.%e -AllDates -FileModifyDate -FileCreateDate C:\x\2
You were missing the %f.%e from your command. Without it, exiftool doesn't know what file to copy from and is "touching" all the target files, which will simply update the FileModifyDate to the current time and not actually copy any data.
Thank you very much.