Thank you kindly, Marcus Llewellyn, for a patch that:

An attachment with the physical checkbox checked will not allow the 
phantom checkbox to be cleared. This interfers with scripting 
functions such as llMoveToTarget(), which won't work while an object 
is phantom. If the prim containing the script is rezzed to the ground, 
it will then allow the phantom checlbox to be cleared, and the script 
works as expected.

1 files changed, 24 insertions, 4 deletions

diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
index 8e4a9d3..2552a3d 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs
@@ -1596,11 +1596,31 @@ namespace OpenSim.Region.Framework.Scenes
             SceneObjectPart rootpart = m_rootPart;
             if (rootpart != null)
             {
-                if (rootpart.PhysActor != null)
+                if (IsAttachment)
                 {
-                    rootpart.PhysActor.PIDTarget = new PhysicsVector(target.X, target.Y, target.Z);
-                    rootpart.PhysActor.PIDTau = tau;
-                    rootpart.PhysActor.PIDActive = true;
+                    ScenePresence avatar = m_scene.GetScenePresence(rootpart.AttachedAvatar);
+                    if (avatar != null)
+                    {
+                        List<string> coords = new List<string>();
+                        uint regionX = 0;
+                        uint regionY = 0;
+                        Utils.LongToUInts(Scene.RegionInfo.RegionHandle, out regionX, out regionY);
+                        target.X += regionX;
+                        target.Y += regionY;
+                        coords.Add(target.X.ToString());
+                        coords.Add(target.Y.ToString());
+                        coords.Add(target.Z.ToString());
+                        avatar.DoMoveToPosition(avatar, "", coords);
+                    }
+                }
+                else
+                {
+                    if (rootpart.PhysActor != null)
+                    {
+                        rootpart.PhysActor.PIDTarget = new PhysicsVector(target.X, target.Y, target.Z);
+                        rootpart.PhysActor.PIDTau = tau;
+                        rootpart.PhysActor.PIDActive = true;
+                    }
                 }
             }
         }