Sorting for Multiple Artists

[Starrcade]

I have a song on an INXS cd that is a duet with Ray Charles. The Artist name for the song was INXS, so I changed the Artist for the song to "INXS feat. Ray Charles" and all my sort tags in my profile disappeared. I added the sort tags again, and the Artist Sort tag said "INXS feat. Ray Charles." I thought the software would recognize "feat." and create tags for each artist.

Note: I have "Detect Multi artists from '&', 'ft.' & 'feat.'" selected in the Options, but it isn't making tags for each artist, or I don't understand what this option really does. What is it supposed to do?

What is the correct way to make artist sort tags when you have a song with 2 artists? The sort tags should be for "INXS" and "Charles, Ray." I don't know how people normally handle this, or what is the correct method/steps.

[Spoon]

"Detect Multi artists from '&', 'ft.' & 'feat.'"

When reading from the internet it will correctly enter the artist names, in this instance if manually entering you should put:

INXS; Ray Charles