As you don't answer straightforward questions, do not give feedback whether suggestions work, change the topic in mid-run from
to
and finally to
and the only common thing is that the changes should happen to the filename.
From my point of view these are all different topics as they all point to a different approach.
Why have you never attempted to rename the files with Convert>Tag-Filename?
As the files are nicely tagged all further fiddling with the filename alone is tedious, superfluous effort as there is a much easier solution.