From: Phil Walden, Jr.:

For years Atlantic paid a royalty to Duane’s estate for the Layla album pursuant to a verbal deal between phil and i guess wexler.  RSO was distributed in the us by atlantic (I think that’s the connection).  When atlantic was no longer involved the checks stopped.  We tried to help galadrielle out but polygram ( this was 97) basically said there was no contract so they wouldn’t pay.  This was at the same time they were releasing the lalyla box set with duane all over it.  Maybe something’s happened since then, but I doubt it.

(note-Galadrielle is Duane Allman’s daughter.)