I would also update the md3 model of AT-ST: it's used in some levels. But in such a way, that the new one would override the old one with the same angle (thus in the existing maps one would simply replace the old model without bugs).
There is no problem with the map object, the problem was with the animated model, it's feet wouldn't tilt in the right direction when walking on uneven terrain, check the thread "Let's talk about tags" in the General Modding forum.
