I have setup my Amazon echo to work with Sonos using the Sonos skill.  The services I have available are Apple Music and Amazon music.  If I ask Echo to “play music by Abba in the Lounge” it plays the music through that zone player but it comes from Amazon Music rather than Apple Music.  I’ve deleted Amazon Music service from the Sonos app and set up Apple Music as the default preferred music service in the Alexa app however it still plays from Amazon.

“play music by abba in the Lounge” - comes from Amazon Music through the Sonos

“play music by abba” - comes from Apple Music through the echo speaker

“play music by abba in the Lounge on Apple Music” - comes from Apple Music through the Sonos

Is there anyway to get this working so that the default with Sonos is Apple as it is when using the internal speaker.  Otherwise I may swell just use the Sonos app and Alexa becomes redundant.  It doesn’t appear to be possible to disable Amazon Music on the Alexa/Echo.