Edition missing in NFO

I just found that the field edition (e.g Theatrical Edition) is not stored in the NFO file. Two questions:

* Are there other fields that are not saved into the NFO?
* What happens if I start TinyMediaManager from scratch. All these fields are missing then?

Thanks in advance.

***EDIT:*** Changing the edition field for an existing entry leads to a rewritten NFO that does not contain changed data.