SQL foreign key window issue for newly created EF Code first table : I don't know if anyone face this issue or it's just something else.

I am folloing EF code first architecture.

here is my first class GeneralSettings :

    public class PerformanceSurchargeGeneralSettings: FullAuditedEntity
    {
        public int PerformanceID { get; set; }
        public Performance Performance { get; set; }

        public int SurchargeId { get; set; }
        public Surcharges Surcharge { get; set; }
    }

And here is the second class Surcharge : 

    public class Surcharges : FullAuditedEntity
    {
        public  string Name { get; set; }

        public ICollection<PerformanceSurchargeGeneralSettings> PerformanceSurchargeGeneralSettings{ get; set; }
    }

Everything works fine, I can add migration, update my database but if I go to table and check for foreign key reference, I can't see primary key table.see below snap.


[![enter image description here][1]][1]


> Even I am not able to find newly added table that is Surcharge in the dropdown of primary key table.

And if I execute SP_help for this table, I can find all foreign keys, see below snap.

[![enter image description here][2]][2]

**SO, I don't understand where exactly issue is?**

  [1]: https://i.stack.imgur.com/9dEzd.png
  [2]: https://i.stack.imgur.com/xyVTh.png