Losing data on Hangfire execution

Question

I have a hangfire job that is losing data from a LinkedList contained inside the object passed as a parameter.

The user inputs a delimited file which is parsed out into an object storing each line in a LinkedList of another object. I then enque a hangfire job and pass the object in as a parameter. When the job executes, all the data inside the link list is null. The list still contains the correct number of elements, just each one is empty. Any Ideas?

Object definition here.

public class ExternalScanDTO : BaseDTO
{
    [Key]
    public int ScanHeaderID { get; set; }

    public int? ScannerID { get; set; }

    public string DeviceIdentifier { get; set; }

    public int? RFIDInputID { get; set; }

    //this is the list losing data
    [SuppressMessageAttribute("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
    public LinkedList<ScanLineDTO> ScanLineDTOs { get; set; }

    public DbGeography Location { get; set; }

    public Guid GlobalUID { get; set; }

    public int? UserID { get; set; }

    public int StatusCodeRecordTypeID { get; set; }
    public string StatusCodeRecordTypeName { get; set; }
}

I parse the file and enqueue the job here

 public ActionResult ParseCS4070CSVScanFile([DataSourceRequest] DataSourceRequest kendoRequest, ScanFileImportModel import)
    {
        try
        {
            int count = 0;
            import.ParsingErrors = new List<ParsingError>();
            var parser = new TextFieldParser(import.File.InputStream);
            parser.TextFieldType = FieldType.Delimited;
            parser.Delimiters = new string[] { "," };

            var result = new ExternalScanDTO()
            {
                ScannerID = import.ScannerID,
                StatusCodeRecordTypeID = (int)StatusCodeEnums.ScanHeaderRecordTypes.Barcode,
                ScanLineDTOs = new LinkedList<ScanLineDTO>(),
            };

            // Build parsed list of Scan Lines:
            while (!parser.EndOfData)
            {
                count++;
                var rowValues = parser.ReadFields();

                if (!isValidScanLine(import, rowValues, count))
                    continue;

                var addedLine = new ScanLineDTO
                {
                    StatusCodeID = (int)StatusCodeEnums.ScanLineStatusCodes.Valid,
                    StatusCodeScanTypeID = (int)StatusCodeEnums.ScanLineScanType.StandardOrder,
                    Barcode = rowValues[3],
                    ScanTimeStamp = DateTime.Parse(rowValues[0] + " " + rowValues[1], CultureInfo.CurrentCulture, DateTimeStyles.AssumeUniversal),
                };
                addedLine.DateCreated = DateTime.UtcNow;
                result.ScanLineDTOs.AddLast(addedLine);
            }

            if (import.ParsingErrors.Count > 0)
                throw new MyException(import.ParsingErrorsToHtml);
            if(result.ScanLineDTOs.Count == 0)
                throw new MyException("The File does not contains any lines");
            // POST LINES TO DATABASE:

            var hfj = new HFJScans();
            BackgroundJob.Enqueue(() => hfj.ProcessScanValidation(result));

            return Content(""); 

        }
        catch (Exception ex) {return AjaxErrorMessage(ex);}
    }

The job executes this method contained inside the HfjScans object created in the previous method, which does some validation checks. By this point the Linked list contains empty elements

   public void ProcessScanValidation(ExternalScanDTO result)
    {
        using (var wfOpr = new WFScanUploadValidate())
        {
            var resultID = wfOpr.Run(result); 
        }
    }