AAC support for initialkey tag?

Hello,

I noticed that RB does not read the key tag from the mp4 tag initialkey. It reads it correctly from an mp3 but not AAC.

You can set it in RB but it is kept in RB database and when you "reload the tag", the key tag will be reset to nothing (again only for AAC).

Is there a plan to support the key tag for mp4 not just ID3 mp3?