Pushing BsonDocument to mongodb does not push document OR -if pushed- some text in the document goes missing

Question

I zip 2 lists of string together and add them to a BsonDocument, which i want to append to a collection. When I upload my BsonDocument into LocalHost on MongoDB, my BsonDocument is added fine to the collection. However, when I upload BsonDocuments into a live database, the BsonDocument either does not upload onto the database or chunks of the information from the document goes missing.

Another issue is that I would like to push a string into a collection. It adds fine on Localhost but the string is added 22 TIMES on the live database? why is this repeating?

I've been wracking my head over this issue for many days. please help

string connectionString = "mongodb://XX.XX.XX.XX:XXXXX";

MongoClientSettings settings = MongoClientSettings.FromUrl (new MongoUrl (connectionString));
MongoClient mongoClient = new MongoClient (settings);

var db = mongoClient.GetDatabase ("orderstable");
var collec = db.GetCollection<BsonDocument> ("orders");

var diction = keys.Zip (vals, (k, v) => new { k, v }).ToDictionary (x => x.k, x => x.v);

document.AddRange (diction);

var filter = Builders<BsonDocument>.Filter.Eq (searchField, jobIdInt);
var pushManifest = Builders<BsonDocument>.Update.Set ("manifest", document);

collec.UpdateOne (filter, pushManifest);