RC3: CollisionActive* always turned on for t2dTriggers

1. Launch TGB open TGB project and start a new level untitled.t2d
2. Drag a trigger onto the level
3. Look at Edit>Collision and observe that Send Collision and Receive Collision are both checked . This seems to be a bug because according to the docs, and for other t2dSceneObjects I have tested, the levelbuilder and the engine enforce the defaults to be:

Quote:in TGB Reference.pdf :
CollisionActiveReceive = "0"
CollisionActiveSend = "0"

4. Ctrl-S to save and look at untitled.t2d with an editor to confirm:

CollisionActiveSend = "1";
CollisionActiveReceive = "1";

5. Uncheck Send Collision and Receive Collision, then Ctrl-S to save and quit out of TGB [edit: we will restart in a couple]
6. Look at untitled.t2d again and confirm CollisionActiveReceive and Send are not written. Presumably defaulting to 0 according to the doc.

new t2dTrigger() {
      position = "-7.82 -11.9";
      size = "16 16";
         mountID = "2";
   };

7. Launch TGB and go to Edit>Collision. Note that Send Collision and Receive Collision are mysteriously checked again
8. Ctrl-S again and look at untitled.t2d again. They are always turned back on:

CollisionActiveSend = "1";
CollisionActiveReceive = "1";