Updating field data between forms...

Updating field data between forms...

I have two different forms for membership data.  The 1st form contains all membership contact information.  The second form records their annual dues payments.  I have much of their contact data fetched to the second form so I can see if any contact data needs to be updated when their renewal comes in.  The problem is I cannot figure out the right code to make the any updates be reflected in the first form (or table).  Here is the code I am using to pull the data.  What code do I need for updating it?

temp  =  Membership_Data  [MembershipID == input.DMembershipID];
input.DOrganization = temp.Organization;
input.DFirst_Name = temp.First_Name;
input.DLast_Name = temp.Last_Name;
input.DDegree1 = temp.Degree1;
input.DEmail_Address = temp.Email_Address;
input.DPhone_Number = temp.Phone_Number;
input.DFax_Number = temp.Fax_Number;
input.DAddress_1 = temp.Address_1;
input.DAddress_2 = temp.Address_2;
input.DCity = temp.City;
input.DState = temp.State;
input.DMailing_Code = temp.Mailing_Code;
input.DCountry = temp.Country;
input.DWebsite = temp.Website;
input.DMembership_Type = temp.Membership_Type;