Alpha Edge Blur

[rich2005]

It is your workflow that is the problem

Image -> Resize Canvas -> Add alpha (-> Delete Surroundings-why?)

Still leaves the original layer boundary

Needs to be: Image -> Add alpha channel -> Resize Canvas with layers options "All layers" & "Transparency"




Alpha Channel locked?
Gimp is not Autonomous, if the alpha channel is locked then some time you locked it.