[.FuneraL.]

pawn Код:

public OnPlayerEnterDynamicRaceCP(playerid, checkpointid)
{
    if(checkpointid == buscp1[playerid])
    {
        DestroyDynamicRaceCP(buscp1[playerid]);
        buscp2[playerid] = CreateDynamicRaceCP(0, 393.8065,-1770.1382,5.3697, 850.7170,-1329.2406,13.4902, 2, -1, -1, playerid, 1000000);
    }
    
    if(checkpointid == buscp2[playerid])
    {
        DestroyDynamicRaceCP(buscp2[playerid]);
        buscp3[playerid] = CreateDynamicRaceCP(0, 850.7170,-1329.2406,13.4902, 1206.4131,-1328.0035,13.3984, 2, -1, -1, playerid, 1000000);
    }
    return 1;
}

Try with this, i remove the else of the second function