diff --git a/app/models/form/sales/questions/owning_organisation_id.rb b/app/models/form/sales/questions/owning_organisation_id.rb
index 7e3e2a43d..a09fe05ed 100644
--- a/app/models/form/sales/questions/owning_organisation_id.rb
+++ b/app/models/form/sales/questions/owning_organisation_id.rb
@@ -27,16 +27,23 @@ class Form::Sales::Questions::OwningOrganisationId < ::Form::Question
                                           end
     end
 
-    user_organisation_options = user.support? ? Organisation.where(holds_own_stock: true) : Organisation.none
-    user_answer_options = user_organisation_options.pluck(:id, :name).to_h
-
-    unless user.support?
+    if user.support?
+      Organisation.where(holds_own_stock: true).find_each do |org|
+        if org.merge_date.present?
+          answer_opts[org.id] = "#{org.name} (inactive as of #{org.merge_date.to_fs(:govuk_date)})" if org.merge_date >= FormHandler.instance.start_date_of_earliest_open_for_editing_collection_period
+        elsif org.absorbed_organisations.merged_during_open_collection_period.exists?
+          answer_opts[org.id] = "#{org.name} (active as of #{org.created_at.to_fs(:govuk_date)})"
+        else
+          answer_opts[org.id] = org.name
+        end
+      end
+    else
       recently_absorbed_organisations.each do |absorbed_org|
         answer_opts[absorbed_org.id] = merged_organisation_label(absorbed_org.name, absorbed_org.merge_date) if absorbed_org.holds_own_stock?
       end
     end
 
-    answer_opts.merge(user_answer_options)
+    answer_opts
   end
 
   def displayed_answer_options(log, user = nil)
diff --git a/spec/models/form/sales/questions/owning_organisation_id_spec.rb b/spec/models/form/sales/questions/owning_organisation_id_spec.rb
index 19705e1e9..9cfefbf8b 100644
--- a/spec/models/form/sales/questions/owning_organisation_id_spec.rb
+++ b/spec/models/form/sales/questions/owning_organisation_id_spec.rb
@@ -160,9 +160,9 @@ RSpec.describe Form::Sales::Questions::OwningOrganisationId, type: :model do
     end
 
     context "when user is support" do
-      let(:user) { create(:user, :support) }
+      let(:user) { create(:user, :support, organisation: organisation_1) }
 
-      let(:log) { create(:lettings_log) }
+      let(:log) { create(:lettings_log, created_by: user) }
 
       let(:non_stock_organisation) { create(:organisation, holds_own_stock: false) }
       let(:expected_opts) do
@@ -176,6 +176,48 @@ RSpec.describe Form::Sales::Questions::OwningOrganisationId, type: :model do
         expect(question.displayed_answer_options(log, user)).to eq(expected_opts)
         expect(question.displayed_answer_options(log, user)).not_to include(non_stock_organisation.id)
       end
+
+      context "when an org has recently absorbed other orgs" do
+        let(:merged_organisation) { create(:organisation, name: "Merged org") }
+        let(:options) do
+          {
+            "" => "Select an option",
+            organisation_1.id => "first test org (active as of 2 February 2021)",
+            organisation_2.id => "second test org",
+            merged_organisation.id => "Merged org (inactive as of 2 February 2023)",
+          }
+        end
+
+        before do
+          merged_organisation.update!(merge_date: Time.zone.local(2023, 2, 2), absorbing_organisation: organisation_1)
+          organisation_1.update!(created_at: Time.zone.local(2021, 2, 2))
+        end
+
+        it "shows merged organisation as an option" do
+          expect(question.displayed_answer_options(log, user)).to eq(options)
+        end
+      end
+
+      context "when user's org has absorbed other orgs during closed collection periods" do
+        let(:merged_organisation) { create(:organisation, name: "Merged org") }
+        let(:options) do
+          {
+            "" => "Select an option",
+            organisation_1.id => "first test org",
+            organisation_2.id => "second test org",
+          }
+        end
+
+        before do
+          Timecop.freeze(Time.zone.local(2023, 4, 2))
+          merged_organisation.update!(merge_date: Time.zone.local(2021, 6, 2), absorbing_organisation: user.organisation)
+          user.organisation.update!(created_at: Time.zone.local(2021, 2, 2))
+        end
+
+        it "shows merged organisation as an option" do
+          expect(question.displayed_answer_options(log, user)).to eq(options)
+        end
+      end
     end
   end