Hi i tried to create a guess value action to remove a part from directory but it doesn't work.
the action i used was:
Action type: Guess values
Source format: _DIRECTORY
Guessing pattern: %_DIRECTORY% ( %dummy%
what i'm trying to remove is the bold part:
Booka Shade Kaktus Einarsson - Perfect in a Way BFMB065CLUB (Melodic House & Techno)
There appears to be a space between ( and %dummy% which should not be there.
My bad, i forgot to mention that i tried to move things around (bracket or %dummy) to see if the action would work but it didn't. I'll try it again to see if it will work.
NO, it's not working. 
It has to be %_directory%
I was sure i tried that also...
BUT there is a big BUT it's actually working, now that i actually tried that also... 
It seems that my mind is not inside my head lately... 
Thanks @poster
UPDATE
Too fast...
So it is changing in Mp3tag but not in the actual folder
Same behaviour even if i try to do that on %_folderpath%
I found a way to succeed it.
Step 1
Action type: Guess values
Source format: %_directory%
Guessing pattern: %_directory% (%dummy%
Step 2
Action type: Format values
Source format: _DIRECTORY
Guessing pattern: %_DIRECTORY%
In format value action it seems that it needs to be Source format: _DIRECTORY