javascript bulk inset update

try {
   db.restaurant.updateMany(
       { "name" : "Pizza Rat‘s Pizzaria" },
       { $inc: { "violations" : 3}, $set: { "Closed" : true } },
       { w: "majority", wtimeout: 100 }
   );
} catch (e) {
   print(e);
}

try {
   db.CollateralRepresentationBulkTest.bulkWrite(
      [
         { updateMany :
            {
               "filter" : { "uicid" : "170484_SMCP_1001059_20200131_20200302" },
               "update" : { $set : { "xipEnvId" : "test2" } }
            }
         },
         { updateMany :
            {
               "filter" : { "uicid" : "170484_SMCP_100159930_20200131_20200302" },
               "update" : { $set : { "xipEnvId" : "test2" } }
            }
         }
      ]
         //,{ writeConcern : { w : "majority", wtimeout : 20 }, ordered : false }
   );
} catch (e) {
   print(e);
}

 var ops = [];

  

try {
var trades = db.CollateralRepresentationBulkTest.find({},{ uicid: 1,  _id: 0 }).limit(1000);
while(trades.hasNext()){
                    
                       ops.push(
                       { updateMany :
            {
               "filter" : { "uicid" : trades.next().uicid },
               "update" : { $set : { "xipEnvId" : "test" } }
            }
         }
                       );
                    }
                    var startTime = (new Date()).getTime();
   db.CollateralRepresentationBulkTest.bulkWrite(
      ops
      //,{ writeConcern : { w : "majority", wtimeout : 100 }, ordered : false }
   );
   var runTime = (new Date()).getTime()-startTime;
                    print("Finished, runTime is "+runTime+"ms");
} catch (e) {
   print(e);
}

tmDb = db.getSiblingDB(‘timemachine‘);




         try{
                    var trades = tmDb.CollateralRepresentationBulkTest.find({}).limit(1000);
                    var bulk = tmDb.CollateralRepresentationBulkTest.initializeUnorderedBulkOp();
                    var startTime = (new Date()).getTime();
                    while(trades.hasNext()){
                    
                       bulk.find( { uicid: trades.next().uicid } ).update( { $set: { xipEnvId: "test" } } );
                    }
                    bulk.execute();
                    
                    var runTime = (new Date()).getTime()-startTime;
                    print("Finished, runTime is "+runTime+"ms");
                 }catch (e){
                   print (e);
                 }
                 

tmDb = db.getSiblingDB(‘timemachine‘);


db.CollateralRepresentationBulkTest.drop();

         try{
                    var trades = tmDb.CollateralRepresentation.find({}).limit(1000);
                    var bulk = tmDb.CollateralRepresentationBulkTest.initializeUnorderedBulkOp();
                    
                    while(trades.hasNext()){
                       bulk.insert(trades.next());
                    }
                    var startTime = (new Date()).getTime();
                    bulk.execute();
                    var runTime = (new Date()).getTime()-startTime;
                    print("Finished, runTime is "+runTime+"ms");
                    tmDb.CollateralRepresentationBulkTest.createIndex({"uicid":1, },{background : true})
                 }catch (e){
                   print (e);
                 }