[itsme]

It's easy to edit a CSV so that the songs that it specifies go into whatever group you prefer ("group" in MSP speak is the generic term for Collections, Albums, Setlists, Composers ...).
The column headers in a CSV specify the database / song editor fields that are populated with the column's content.
You can easily populate a different field by changing the column header or add a column that populates whatever field you like.
The keywords to be used for the column headers are listed in the manual, see one of my previous posts in this thread.

I recommend LibreOffice Calc for editing CSV files.