How can you rework an old map ?

Hello, everybody! It"s me again CRAZY RACER and I have a question. How can you rework an old map? Because I like the Monza Autodromo 1988 Track made by @skiper . It is an amaizing map but it has some problems, For Example: When I spawn at the track the map is stuck at the free mode camera, and when I spawn a car then the car goes under the track. So that means that I can"t drive on the track. So I have was wondering If I could remake the map. But first I needed to know how? So if You know how to remake an old map then you can just, post it in this thread. Thank You CRAZY RACER.
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Here is the link to the map:https://www.beamng.com/threads/autodromo-nazionale-monza-1988.4010/

 

Sounds like you need to go in the map editor, select the track model, and set the collisions from collision mesh to visible mesh

 

Thank you so much Fen! I will try it out!
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Okay so I couldn"t find A track Model or the Colision mesh on the World Editor, but somehow the car drives on the track perfectly! But the camera is still stuck at the free camera mode. So it sort of works.
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And Thank you for the tip!

 

I found another map! It"s called Someone"s Rally Track, it is an amazing map a really good map But when I install it and put it in to the maps folder or put the Winrar file of the Rally Track, to the Documents and then BeamNG.Drive and then mods. It Always works on these old maps but apperantly not for this one the map didn"t even appere in the game, and that is a real a bumer. So it would be good if Someone (not the creator of this map) can say how to kinda fix this map. So thank you for your answers and I will try those answers out and see if they work! Thank You Sinceraly CRAZY RACER! Here is the link to the map:https://www.beamng.com/threads/someones-rallytrack.5004/

 

Okay Thank You! thomatoes50 I will try that out! And sorry for reuploading the map without the creator"s agreement.
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Sorry but How do I do a info.json? Sorry for asking you this question I am not a expert.

 

I am sorry but Do I have to make my own info.json or do I have to download it or something?
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YEEEEEEEEEEEEEEEEEEEEEEESSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS! Thank you so much! Thank you Very much Iro Thank you very much! And I thank you too @thomatoes50 For helping me too!