diff --git a/app/models/log.rb b/app/models/log.rb
index 366761e26..c0bf979df 100644
--- a/app/models/log.rb
+++ b/app/models/log.rb
@@ -41,7 +41,7 @@ class Log < ApplicationRecord
   }
   scope :created_by, ->(user) { where(created_by: user) }
 
-  attr_accessor :skip_update_status
+  attr_accessor :skip_update_status, :skip_update_uprn_confirmed
 
   def process_uprn_change!
     if uprn.present?
@@ -53,7 +53,7 @@ class Log < ApplicationRecord
       presenter = UprnDataPresenter.new(service.result)
 
       self.uprn_known = 1
-      self.uprn_confirmed = nil
+      self.uprn_confirmed = nil unless skip_update_uprn_confirmed
       self.address_line1 = presenter.address_line1
       self.address_line2 = presenter.address_line2
       self.town_or_city = presenter.town_or_city
diff --git a/app/services/bulk_upload/lettings/year2023/row_parser.rb b/app/services/bulk_upload/lettings/year2023/row_parser.rb
index dad4c92a1..632a0e914 100644
--- a/app/services/bulk_upload/lettings/year2023/row_parser.rb
+++ b/app/services/bulk_upload/lettings/year2023/row_parser.rb
@@ -1153,6 +1153,8 @@ private
     attributes["first_time_property_let_as_social_housing"] = first_time_property_let_as_social_housing
 
     attributes["uprn_known"] = field_18.present? ? 1 : 0
+    attributes["uprn_confirmed"] = 1 if field_18.present?
+    attributes["skip_update_uprn_confirmed"] = true
     attributes["uprn"] = field_18
     attributes["address_line1"] = field_19
     attributes["address_line2"] = field_20
diff --git a/app/services/bulk_upload/sales/year2023/row_parser.rb b/app/services/bulk_upload/sales/year2023/row_parser.rb
index 227ef8096..6638432cf 100644
--- a/app/services/bulk_upload/sales/year2023/row_parser.rb
+++ b/app/services/bulk_upload/sales/year2023/row_parser.rb
@@ -795,7 +795,8 @@ private
 
     attributes["mortlen"] = mortlen
 
-    attributes["proplen"] = proplen
+    attributes["proplen"] = proplen if proplen&.positive?
+    attributes["proplen_asked"] = attributes["proplen"]&.present? ? 0 : 1
     attributes["jointmore"] = field_15
     attributes["staircase"] = field_87
     attributes["privacynotice"] = field_29
@@ -812,6 +813,9 @@ private
     attributes["mortgageused"] = mortgageused
 
     attributes["uprn"] = field_19
+    attributes["uprn_known"] = field_19.present? ? 1 : 0
+    attributes["uprn_confirmed"] = 1 if field_19.present?
+    attributes["skip_update_uprn_confirmed"] = true
     attributes["address_line1"] = field_20
     attributes["address_line2"] = field_21
     attributes["town_or_city"] = field_22
diff --git a/spec/requests/lettings_logs_controller_spec.rb b/spec/requests/lettings_logs_controller_spec.rb
index 7f1dda118..e0c785b71 100644
--- a/spec/requests/lettings_logs_controller_spec.rb
+++ b/spec/requests/lettings_logs_controller_spec.rb
@@ -1138,14 +1138,14 @@ RSpec.describe LettingsLogsController, type: :request do
       it "only displays affected logs" do
         get "/lettings-logs/update-logs", headers:, params: {}
         expect(page).to have_content("You need to update 3 logs")
-        expect(page).to have_content(affected_lettings_logs.first.id)
-        expect(page).not_to have_content(non_affected_lettings_logs.first.id)
+        expect(page).to have_link("Update now", href: "/lettings-logs/#{affected_lettings_logs.first.id}/tenancy-start-date")
+        expect(page).not_to have_link("Update now", href: "/lettings-logs/#{non_affected_lettings_logs.first.id}/tenancy-start-date")
       end
 
       it "only displays the logs created by the user" do
         get "/lettings-logs/update-logs", headers:, params: {}
-        expect(page).to have_content(affected_lettings_logs.second.id)
-        expect(page).not_to have_content(other_user_affected_lettings_log.id)
+        expect(page).to have_link("Update now", href: "/lettings-logs/#{affected_lettings_logs.second.id}/tenancy-start-date")
+        expect(page).not_to have_link("Update now", href: "/lettings-logs/#{other_user_affected_lettings_log.id}/tenancy-start-date")
         expect(page).to have_content("You need to update 3 logs")
       end
 
diff --git a/spec/services/bulk_upload/lettings/year2023/row_parser_spec.rb b/spec/services/bulk_upload/lettings/year2023/row_parser_spec.rb
index d881b972b..4cd9e40bc 100644
--- a/spec/services/bulk_upload/lettings/year2023/row_parser_spec.rb
+++ b/spec/services/bulk_upload/lettings/year2023/row_parser_spec.rb
@@ -1077,6 +1077,7 @@ RSpec.describe BulkUpload::Lettings::Year2023::RowParser do
 
         it "sets to 1" do
           expect(parser.log.uprn_known).to be(1)
+          expect(parser.log.uprn_confirmed).to be(1)
         end
       end
 
diff --git a/spec/services/bulk_upload/sales/year2023/row_parser_spec.rb b/spec/services/bulk_upload/sales/year2023/row_parser_spec.rb
index f6e9632c6..c7ef89374 100644
--- a/spec/services/bulk_upload/sales/year2023/row_parser_spec.rb
+++ b/spec/services/bulk_upload/sales/year2023/row_parser_spec.rb
@@ -542,6 +542,12 @@ RSpec.describe BulkUpload::Sales::Year2023::RowParser do
         it "is valid" do
           expect(parser.errors[:field_19]).to be_blank
         end
+
+        it "sets UPRN and UPRN known" do
+          expect(parser.log.uprn).to eq("100023336956")
+          expect(parser.log.uprn_known).to eq(1)
+          expect(parser.log.uprn_confirmed).to eq(1)
+        end
       end
 
       context "when UPRN not known but address known" do
@@ -673,6 +679,24 @@ RSpec.describe BulkUpload::Sales::Year2023::RowParser do
       end
     end
 
+    describe "#uprn_known" do
+      context "when uprn known" do
+        let(:attributes) { setup_section_params.merge({ field_19: "100023336956" }) }
+
+        it "is correctly set" do
+          expect(parser.log.uprn_known).to be(1)
+        end
+      end
+
+      context "when uprn not known" do
+        let(:attributes) { setup_section_params.merge({ field_19: nil }) }
+
+        it "is correctly set" do
+          expect(parser.log.uprn_known).to be(0)
+        end
+      end
+    end
+
     describe "#address_line1" do
       let(:attributes) { setup_section_params.merge({ field_20: "some street" }) }
 
@@ -776,5 +800,41 @@ RSpec.describe BulkUpload::Sales::Year2023::RowParser do
         expect(parser.log.soctenant).to be(1)
       end
     end
+
+    describe "with living before purchase years for shared ownership more than 0" do
+      let(:attributes) { setup_section_params.merge({ field_7: "1", field_86: "1" }) }
+
+      it "is sets living before purchase asked to yes and sets the correct living before purchase years" do
+        expect(parser.log.proplen_asked).to be(0)
+        expect(parser.log.proplen).to be(1)
+      end
+    end
+
+    describe "with living before purchase years for discounted ownership more than 0" do
+      let(:attributes) { setup_section_params.merge({ field_7: "2", field_115: "1" }) }
+
+      it "is sets living before purchase asked to yes and sets the correct living before purchase years" do
+        expect(parser.log.proplen_asked).to be(0)
+        expect(parser.log.proplen).to be(1)
+      end
+    end
+
+    describe "with living before purchase years for shared ownership set to 0" do
+      let(:attributes) { setup_section_params.merge({ field_7: "1", field_86: "0" }) }
+
+      it "is sets living before purchase asked to no" do
+        expect(parser.log.proplen_asked).to be(1)
+        expect(parser.log.proplen).to be_nil
+      end
+    end
+
+    describe "with living before purchase 0 years for discounted ownership set to 0" do
+      let(:attributes) { setup_section_params.merge({ field_7: "2", field_115: "0" }) }
+
+      it "is sets living before purchase asked to no" do
+        expect(parser.log.proplen_asked).to be(1)
+        expect(parser.log.proplen).to be_nil
+      end
+    end
   end
 end