This function allows you to import information from iTunes. Note the operation only works on selected files which are linked to iTunes. When Use defaults is checked, the values which get imported depend on the fields selected in the Preferences General panel - iTunes Linked setting.
Classical metadata refers to the fields: Work Name, Movement Name, Movement Number and Movement Count. The proper understanding of what has to be done to properly synchronize classical and grouping metadata can be found in iTunes, Classical Metadata and the Grouping Field.
The Media Kind, associated with Yate's Media Type field, can have the following value: Audiobook, Alert Tone, Booklet, Home Video, iTunesU, Movie, Music, Music Video, Podcast, Ringtone, TV Show, and Voice Memo.
Note: PIDs are meaningless and should not be retained if you have more than one iTunes library.
Depending on your Preferences - iTunes settings, the Link to iTunes and Link to iTunes if Modified functions may auto import information from iTunes.