I have a mongodb query or script that will update all employee team project and will change the team project to "DUMMY" only when the current project is "bbb234". I got a weird behavior since there are some project (bbb234) which are not changed to "DUMMY". I am not sure if my condition is wrong but only the first 10 or 12 records are changed. Only late records are not changed even when the team project is "bbb234".

To understand what I meant, please see the script below.

db.getCollection('employees').find(
    { "teams.project" : {
            $in: [ "aaa123", "bbb234" ]
      }
    }
).forEach(e => {
    // skip when there are no teams
    if (!e.teams) {
        return;
    }

    e.teams.forEach(team => {

         if (team.project === "bbb234") {
             team.project = 'DUMMY';
         }

        // This is OK, it will display 'DUMMY' for all team with previous project value of `bbb234`
        // print(team.project); 

        // When displaying team, the condition is `team.project === "bbb234"` is not always true
        // The first 10 employee records have updated team project, 
        // while after that...  the other records still show team.project = "bbb234"
        // print(team);
    });

    // Update employee with the corrected/updated team project
    db.getCollection('employees').updateOne({"_id": e._id}, {$set: {"teams": e.teams}});
})

When I check the records, teams.project value is String. I am not sure where in my script is wrong or not able to handle the condition correctly. I know this is pretty easy but I cannot figure out where I did wrong and why only the early records are updated/changed.

Update:

I tried .toArray() but still I am getting the same error/issue. I really find this wierd

var _employees = db.getCollection('employees').find(
    { "teams.project" : {
            $in: [ "aaa123", "bbb234" ]
      }
    }
).toArray();

_employees .forEach(e => {
    // skip when there are no teams
    if (!e.teams) {
        return;
    }

    e.teams.forEach(team => {

         if (team.project === "bbb234") {
             team.project = 'DUMMY';
         }

        // Still, this is OK
        // print(team.project); 

        // Same issue as with the previous query/script
        // print(team);
    });

    // Update employee with the corrected/updated team project
    db.getCollection('employees').updateOne({"_id": e._id}, {$set: {"teams": e.teams}});
})