I have been editing some maps in Sapien, but something extrange happened, a vehicle had damaged physics, and I created new ones, but after creating the new physics, when I added this vehicle to the map, It sinked in the ground, like if there would be no floor. (I also made new collision geometry tags and nothing happened, I just made the problem worse than what it was).

How did you create your physics? From other trouble people have had with physics, it can be concluded that Bluestreak doesn't care about node size, meaning that all of your physics nodes are little dots instead of whatever you wanted them to be. You'll have to resize them manually in guerilla if you've used bluestreak.

I remade them and I already fixed them, the problem was a wrong mass point, sorry.

if i imagine right its like the gta linerunner where its wheels sink into the ground? Look at the wheel position in guerrilla and lower them.

(would help with pictures)