I have some shadows projected using a SoftShadowMapMethod which disapear when I rotate the camera so that the casting object is no longer on screen. 

Is there a way I can change this behaviour so that the shadow is always cast?

I can’t seem to replicate the issue. Do you have a small code example that you can post?

I’ve noticed it when the near plane starts clipping the object.

Shadow should be full (it looks like the window in the pic but its not:)
http://dl.dropbox.com/u/20426629/shadow.jpg

I also have the same problem

This is the example:
http://www.appspouch.com/away3d_shadow_problem

And this is the source code:
http://www.appspouch.com/away3d_shadow_problem/BvhTriangleMeshCarTest.as

Please advice

Thanks,
Guy

I concur. Faces not within the camera frustum don’t appear to cast a shadow.
The easy fix would be to tessellate the faces, i.e. split large faces into small pieces. In the above example the shadow cast by the pile of boxes (if you don’t smash through them!) disappears gradually as you drive away from it, showing nicely the effect/bug.