So i had to redo some inefficient tracks and i removed them while i paused the game and replaced down better paths using the grid system. the problem is, now ALL my guests all over the zoo are stuck, waving their arms around ( i didnt even redo the whole path, just the front entrance area) and when i try to manually move them, they just stay stuck. i tried to save and quite and reload, its still the same problem. I tried again to delete and replace everything, they all got stuck at the entrance and no one could move - i started to manually move them inside and even though theres alot of path space, they're still all just standing in place waving their arms.