The camera tracker only adds keyframes to the camera. That's the only thing that is animated. You just need to add a new camera and see if things line up. If they don't but are close you can manually reposition your layers but it may be wiser to set a new origin and ground plane and then redo the 3D objects.
BTW, if it is long shot - longer than 4 or 5 seconds, and you have things going in and out of frame its usually better to cut up your shot into separate pieces and track each section separately. You'll get a better solve and even though you may end up with 4 or 5 cameras in your scene, you'll spend less time fussing with things. I recently camera tracked a guy and girl walking down the sidewalk in old town Sacramento and had to replace signage in 4 store windows and a couple of lamp posts. I cut the 33 second shot up into 6 separate pieces, made each a separate comp and did them all separately. There were several overlaps so I turned off the footage layer in all of the nested comps and just laid down the original footage in the main comp. Everything matched perfectly on a shot that absolutely would not successfully camera track if i tried to use the whole shot at once.
Hope this helps.
It does. Next time I'll be taking the approach of breaking it up I think. Thanks for the response!