Problem in JsonConvert.SerializeObject to serialize list of entities to TempData.

Hi

I have a main problem which i created in thread (please read it before this thread). Anyway, After a lot of digging & debugging my code, I Think the problem is related to serializing lstPackageDetails to TempData via this method :

private void SetPackageDetailsList(List<DefaultVisitProductDetails> lstPackageDetails)
{
	TempData["_lstPackageDetails"] = JsonConvert.SerializeObject(lstPackageDetails, Formatting.Indented, new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.Objects });
}

I call above method in my Edit action to serialize my packageDetails & store in TempData, :

public IActionResult GetPackageDetails(string id)
        {
            if (id == null)
            {
                return NotFound();
            }

            Guid gidPackageHeaderRowID = Guid.Parse(id);
            List<DefaultVisitProductDetails> packageDetails = _dbContext.DefaultVisitProductDetails.Where(d => d.DefaultVisitProductHeaderRowID == gidPackageHeaderRowID).OrderBy(d => d.ProductID).Include(d => d.Product).ToList();            
            this.SetPackageDetailsList(packageDetails); // Call it!

            return PartialView("_PackageDetailsList", packageDetails);
        }

The problem is that, after calling 'SetPackageDetailsList' method, all packageDetails which have my productIDs being loaded into dbContext!

I think there is a bug in JsonConvert (or someThing else).

Can anybody have idea to store my packageDetails list into TempData without JsonConvert (or solve above problems)?

Thanks in advance