Add txn_date to invoice & estimate databse

app/models/qbo_estimate.rb

@@ -53,6 +53,7 @@ class QboEstimate < ActiveRecord::Base
     qbo_estimate.doc_number = estimate.doc_number
     qbo_estimate.customer_id = estimate.customer_ref.value
     qbo_estimate.id = estimate.id
+    qbo_estimate.txn_date = estimate.txn_date
     qbo_estimate.save!
   end
 

app/models/qbo_invoice.rb

@@ -65,6 +65,7 @@ class QboInvoice < ActiveRecord::Base
     qbo_invoice.doc_number = invoice.doc_number 
     qbo_invoice.id = invoice.id
     qbo_invoice.customer_id = invoice.customer_ref
+    qbo_invoice.txn_date = invoice.txn_date
     qbo_invoice.save!
     
     unless issue.qbo_invoices.include?(qbo_invoice)