When you import new tracks in your library, it can happen that some tags are added that you don't really want. Examples could be the song's Comments, Rating (your taste can be different than someone else's), fields that you don't care about like ISRC, Publisher, ... (of course this is all personal).
This script will automatically clear the specified fields when the tracks are added to the library.
Installation Package: CleanImport110.mmip
Information:
The script runs each time a new track is added in MediaMonkey.
Depending on your previous choice, you'll have to confirm that you want to clear the specified fields:

The settings can be changed in the configuration panel:

(Author being the composer)
The script will only clear the fields in the MediaMonkey library, so it will not change the files' tags (for this you can use MM's "synchronise tags" function). That means that, if you accidentally cleared some fields while importing, you can just import them again and all is well.
Note: If manually clearing a specific field is what you're looking for, then take a look at the Clear Field script.