having trouble with my halo 2 racetracks!!!!!

hello, i am building my own racetrack on containment with entity, everything came out good, all the pieces were all lined up, but for some reason when i play the game on my xbox with the modded track the pieces,they arent connected, even though they are on shown connected on my computer, and yes i did save and resign the map. for example if the track pieces are like this ------- when its on my computer, when i load the map on my xbox the pieces arent connected they are just in the air where i placed them, like this / / / / /. how do i fix this problem so i can get the pieces to load the way i have it saved to the map on my computer. if anyone had this problem and fixed it, or if you know what could be wrong, please tell me. thankyou!!!