получение пустого объекта из mongodb при использовании mon goose (с использованием импортированной базы данных)

Question

Я импортировал базу данных из файла json и создал эту схему и модель, но db возвращает пустой объект при поиске
т.е. []
, но тот же код работает, если я создаю базу данных с использованием этой схемы

var express = require("express"),
	app 	= express(),
	bodyParser = require("body-parser"),
	mongoose= require("mongoose"),
	bodyParser= require("body-parser"),
	Registration = require("./models/registration");

//==============
//MONGOOSE CONFIG
//==============

//========================================
mongoose.connect("mongodb://localhost/new");
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function() {
  // we're connected!
  console.log("CONNECTION TO MONGO SUCCESSFUL")
})

//============
//SOME OTHER PACKAGES
//============

app.set("view engine","ejs");
app.use(express.static('public'));
app.use(bodyParser.urlencoded({extended:true}));

//=============
//ROUTES
//=============

app.get('/',function(req,res){
	res.render("landing");
});
app.post('/',function(req,res){
	var idnumber = req.body.id;
	Registration.find({id:"2019AAPS0334G"}).lean().exec(
		function(err,foundArr){
			if(err){
				console.log(err);
			}
			else{
				console.log(foundArr);
				res.render("index",{foundArr:foundArr});
			}
		}
	);

})
//==============
//PORT on which service starts
//==============

var port = process.env.PORT || 31000
app.listen(port, process.env.IP,function(){
    console.log("Server started at port:"+ port);
})

var mongoose =require("mongoose");

var registrationSchema = new mongoose.Schema({
    id : String,
    name : String,
    courseid : String,
    coursename : String,
    midsemdate : String,
    midsemtime : String,
    compredate : String,
    compretime : String,

});

module.exports = mongoose.model("Registration",registrationSchema);

{ "_id" : ObjectId("5e191cee5bd3cc601decba2b"), "id" : "2019A1PS0224G", "name" : "someguy", "courseid" : "CHEM F110", "coursename" : "CHEMISTRY LABORATORY", "section" : "P2", "midsemdate" : "TO BE ANNOUNCED BY IC", "midsemtime" : "TO BE ANNOUNCED BY IC", "compredate" : "TBA", "compretime" : "TBA" }
{ "_id" : ObjectId("5e191cee5bd3cc601decba2c"), "id" : "2019A1PS0224G", "name" : "someguy", "courseid" : "BITS F110", "coursename" : "ENGINEERING GRAPHICS", "section" : "P3", "midsemdate" : "TO BE ANNOUNCED BY IC", "midsemtime" : "TO BE ANNOUNCED BY IC", "compredate" : "14/05/20 (FN)", "compretime" : "9 AM - 12 Noon" }
{ "_id" : ObjectId("5e191cee5bd3cc601decba2d"), "id" : "2019A1PS0224G", "name" : "someguy", "courseid" : "MATH F113", "coursename" : "PROBABILITY AND STATISTICS", "section" : "L4", "midsemdate" : "06/03/20, Friday", "midsemtime" : "2:00 PM- 3:30 PM", "compredate" : "04/05/20 (AN)", "compretime" : "2 PM - 5 PM" }