diff --git a/app/controllers/api/v2/children_controller.rb b/app/controllers/api/v2/children_controller.rb
index c869ef4ff9..1bb13700f3 100644
--- a/app/controllers/api/v2/children_controller.rb
+++ b/app/controllers/api/v2/children_controller.rb
@@ -16,8 +16,8 @@ def traces
   alias select_updated_fields_super select_updated_fields
   def select_updated_fields
     changes = @record.saved_changes_to_record.keys
-    @updated_field_names = select_updated_fields_super + @record.current_care_arrangements_changes(changes)
-    @updated_field_names << 'family_details_section' if @record.family&.family_members_changed?
+    @updated_field_names = select_updated_fields_super + @record.current_care_arrangements_changes(changes) +
+                           @record.family_changes(changes)
   end
 
   def create_family
diff --git a/app/models/child.rb b/app/models/child.rb
index 41f1833528..9b93bc15b0 100644
--- a/app/models/child.rb
+++ b/app/models/child.rb
@@ -221,6 +221,7 @@ def update_properties(user, data)
     self.family_id = data.delete('family_id') if data.key?('family_id')
     self.registry_record_id = data.delete('registry_record_id') if data.key?('registry_record_id')
     self.mark_for_reopen = @incidents_to_save.present?
+    update_family_data(data)
     super_update_properties(user, data)
   end
 
@@ -284,6 +285,12 @@ def display_id
     case_id_display
   end
 
+  def family_number
+    return super unless family.present?
+
+    family.family_number
+  end
+
   def day_of_birth
     return nil unless date_of_birth.is_a? Date
 
diff --git a/app/models/concerns/family_linkable.rb b/app/models/concerns/family_linkable.rb
index 7e1f07ae18..2c93a800f4 100644
--- a/app/models/concerns/family_linkable.rb
+++ b/app/models/concerns/family_linkable.rb
@@ -11,14 +11,13 @@ module FamilyLinkable
     before_save :associate_to_family
     before_save :update_family_members
     after_save :associate_family_member
-    after_save :update_family
+    after_save :save_family
   end
 
   def stamp_family_fields
     return unless changes_to_save.key?('family_id')
 
     self.family_id_display = family&.family_id_display
-    self.family_number = family&.family_number
   end
 
   def associate_to_family
@@ -39,11 +38,15 @@ def associate_family_member
     end
   end
 
-  def update_family
+  def update_family_data(child_data)
     return unless family.present?
 
-    family.family_number = family_number if saved_changes_to_record.keys.include?('family_number')
-    return unless family.has_changes_to_save?
+    changed_family_fields = FamilyLinkageService::GLOBAL_FAMILY_FIELDS & child_data.keys
+    changed_family_fields.each { |field| family.data[field] = child_data.delete(field) }
+  end
+
+  def save_family
+    return unless family.present? && family.has_changes_to_save?
 
     family.save!
   end
@@ -84,4 +87,18 @@ def find_family_detail(family_detail_id)
   def family_members
     (family&.family_members || []).reject { |member| member['unique_id'] == family_member_id }
   end
+
+  def family_changes(changes)
+    return [] unless family.present?
+
+    changes ||= saved_changes_to_record.keys
+    if changes.include?('family_id_display')
+      return FamilyLinkageService::GLOBAL_FAMILY_FIELDS + ['family_details_section']
+    end
+
+    field_names = []
+    field_names << 'family_details_section' if family.family_members_changed?
+    field_names += FamilyLinkageService::GLOBAL_FAMILY_FIELDS & family.saved_changes_to_record.keys
+    field_names
+  end
 end
diff --git a/app/services/record_data_service.rb b/app/services/record_data_service.rb
index ed9b0f7740..a5fa8f3ea3 100644
--- a/app/services/record_data_service.rb
+++ b/app/services/record_data_service.rb
@@ -98,7 +98,6 @@ def embed_family_info(data, record, selected_field_names)
 
     data['family_id'] = record.family_id if selected_field_names.include?('family_id')
     data['family_member_id'] = record.family_member_id if selected_field_names.include?('family_member_id')
-    data['family_number'] = record.family_number if selected_field_names.include?('family_number')
     data = embed_family_details(data, record, selected_field_names)
     embed_family_details_section(data, record, selected_field_names)
   end
diff --git a/spec/requests/api/v2/children_controller_spec.rb b/spec/requests/api/v2/children_controller_spec.rb
index 8d7c29536e..bb2603e49d 100644
--- a/spec/requests/api/v2/children_controller_spec.rb
+++ b/spec/requests/api/v2/children_controller_spec.rb
@@ -173,7 +173,9 @@
       }
     )
     @family3 = Family.create!(data: { family_number: '003', family_name: 'FamilyTest' })
-    @family4 = Family.create!(data: { family_number: '004', family_name: 'FamilyTest2' })
+    @family4 = Family.create!(
+      data: { family_number: '004', family_size: 2, family_notes: 'NotesFamilyTest2', family_name: 'FamilyTest2' }
+    )
     @family5 = Family.create!(
       data: {
         family_number: '005',
@@ -973,6 +975,8 @@
           params = {
             data: {
               family_number: '002',
+              family_size: 5,
+              family_notes: 'Family002Notes',
               family_details_section: [
                 {
                   unique_id: member2_unique_id,
@@ -992,6 +996,8 @@
 
           expect(response).to have_http_status(200)
           expect(json['data']['family_number']).to eq('002')
+          expect(json['data']['family_size']).to eq(5)
+          expect(json['data']['family_notes']).to eq('Family002Notes')
           expect(json['data']['family_details_section']).to eq(
             [
               {
@@ -1020,6 +1026,8 @@
             ]
           )
           expect(family.family_number).to eq('002')
+          expect(family.family_size).to eq(5)
+          expect(family.family_notes).to eq('Family002Notes')
           expect(family.family_members).to eq(
             [
               {
@@ -1092,7 +1100,7 @@
       end
     end
 
-    it 'links an existing record to a family' do
+    it 'links an existing record to a family and returns global fields' do
       login_for_test(
         permissions: [
           Permission.new(resource: Permission::CASE, actions: [Permission::WRITE, Permission::LINK_FAMILY_RECORD])
@@ -1107,6 +1115,9 @@
       expect(response).to have_http_status(200)
       expect(json['data']['id']).not_to be_empty
       expect(json['data']['family_id']).to eq(@family4.id)
+      expect(json['data']['family_number']).to eq(@family4.family_number)
+      expect(json['data']['family_size']).to eq(@family4.family_size)
+      expect(json['data']['family_notes']).to eq(@family4.family_notes)
       expect(json['data']['family_member_id']).to eq(@family4.family_members[0]['unique_id'])
       expect(@family4.family_members[0]['unique_id']).not_to be_empty
       expect(@family4.family_members[0]['relation_name']).to eq(@case9.name)
diff --git a/spec/support/fake_devise_login.rb b/spec/support/fake_devise_login.rb
index 31eff2fd98..568ad7da5a 100644
--- a/spec/support/fake_devise_login.rb
+++ b/spec/support/fake_devise_login.rb
@@ -42,8 +42,10 @@ module FakeDeviseLogin
         ]
       )
     ),
-    Field.new(name: 'registry_type', type: 'text_field', display_name_en: 'Registry Type'),
-    Field.new(name: 'family_number', type: 'text_field', display_name_en: 'Family Number')
+    Field.new(name: 'registry_type', type: Field::TEXT_FIELD, display_name_en: 'Registry Type'),
+    Field.new(name: 'family_number', type: Field::TEXT_FIELD, display_name_en: 'Family Number'),
+    Field.new(name: 'family_notes', type: Field::TEXT_FIELD, display_name_en: 'Family Notes'),
+    Field.new(name: 'family_size', type: Field::NUMERIC_FIELD, display_name_en: 'Family Size')
   ].freeze
 
   def permission_case