diff --git a/modules/appeals_api/app/models/appeals_api/supplemental_claim.rb b/modules/appeals_api/app/models/appeals_api/supplemental_claim.rb
index d994814374a..b2e270dbab6 100644
--- a/modules/appeals_api/app/models/appeals_api/supplemental_claim.rb
+++ b/modules/appeals_api/app/models/appeals_api/supplemental_claim.rb
@@ -15,7 +15,7 @@ class SupplementalClaim < ApplicationRecord
     attr_readonly :form_data
 
     before_create :assign_metadata, :assign_veteran_icn
-    before_update :submit_evidence_to_central_mail!, if: -> { status_changed_to_success? && delay_evidence_enabled? }
+    before_update :submit_evidence_to_central_mail!, if: -> { status_changed_to_complete? && delay_evidence_enabled? }
 
     def self.past?(date)
       date < Time.zone.today
@@ -45,6 +45,7 @@ def self.date_from_string(string)
 
     has_many :evidence_submissions, as: :supportable, dependent: :destroy
     has_many :status_updates, as: :statusable, dependent: :destroy
+
     # the controller applies the JSON Schemas in modules/appeals_api/config/schemas/
     # further validations:
     validate(
@@ -330,8 +331,8 @@ def email_present?
       claimant.email.present? || email_identifier.present?
     end
 
-    def status_changed_to_success?
-      status_changed? && status == 'success'
+    def status_changed_to_complete?
+      status_changed? && status == 'complete'
     end
 
     def delay_evidence_enabled?
diff --git a/modules/appeals_api/app/sidekiq/appeals_api/evidence_submission_backup.rb b/modules/appeals_api/app/sidekiq/appeals_api/evidence_submission_backup.rb
index a7f9ad80eb2..23fddf6773e 100644
--- a/modules/appeals_api/app/sidekiq/appeals_api/evidence_submission_backup.rb
+++ b/modules/appeals_api/app/sidekiq/appeals_api/evidence_submission_backup.rb
@@ -14,15 +14,41 @@ class EvidenceSubmissionBackup
     sidekiq_options retry: 5
 
     APPEAL_TYPES = [NoticeOfDisagreement.name, SupplementalClaim.name].freeze
-    APPEAL_STATUSES = %w[success complete error].freeze
+    APPEAL_STATUSES = %w[complete error].freeze
 
     def perform
       return unless enabled?
 
-      evidence_to_submit.each(&:submit_to_central_mail!)
+      evidence_to_submit_by_status.each(&:submit_to_central_mail!)
+      evidence_to_submit_by_age.each(&:submit_to_central_mail!)
     end
 
-    def evidence_to_submit
+    def evidence_to_submit_by_age
+      # Get Supp Claims EvidenceSubmissions that have been uploaded to our s3 bucket, but not submitted to central_mail.
+      # Preload the SupplementalClaim(supportable) association and the nested status_updates to get the submitted to
+      # central mail date time to wait 24 hours after CM has the appeal to force the upload irregardless
+      # of the appeal's status.
+      ess = AppealsApi::EvidenceSubmission.includes(supportable: :status_updates).uploaded
+                                          .where(supportable_type: APPEAL_TYPES)
+
+      # filter out EvidenceSubmissions less than 24 hours old
+      ess.filter do |es|
+        # get the time since the supp claim itself was submited and accepted by central mail in hours
+        cm_submitted_time = es.supportable.status_updates
+                              .filter { |us| us.to == 'submitted' }
+                              .max_by { |us| us.status_update_time.to_i }
+                              &.status_update_time
+
+        # if no status update to submitted record just use appeal created_at instead
+        cm_submitted_time = es.supportable.created_at if cm_submitted_time.nil?
+
+        # convert seconds to hours, if the appeal is older than 24 hours, evidence submission
+        # needs to be uploaded to central mail
+        (Time.zone.now - cm_submitted_time) / 3600.0 >= 24
+      end
+    end
+
+    def evidence_to_submit_by_status
       preloaded_evidence_submissions.select { |es| APPEAL_STATUSES.include?(es.supportable.status) }
     end
 
diff --git a/modules/appeals_api/spec/models/supplemental_claim_spec.rb b/modules/appeals_api/spec/models/supplemental_claim_spec.rb
index d543ebf656c..edf743dc81c 100644
--- a/modules/appeals_api/spec/models/supplemental_claim_spec.rb
+++ b/modules/appeals_api/spec/models/supplemental_claim_spec.rb
@@ -458,14 +458,14 @@
     describe 'before_update' do
       before { allow(supplemental_claim).to receive(:submit_evidence_to_central_mail!) }
 
-      context 'when the status has changed to "success"' do
+      context 'when the status has changed to "complete"' do
         let(:supplemental_claim) { create(:supplemental_claim, status: 'processing') }
 
         context 'and the delay evidence feature is enabled' do
           before { Flipper.enable(:decision_review_delay_evidence) }
 
           it 'calls "#submit_evidence_to_central_mail!"' do
-            supplemental_claim.update(status: 'success')
+            supplemental_claim.update(status: 'complete')
 
             expect(supplemental_claim).to have_received(:submit_evidence_to_central_mail!)
           end
@@ -475,7 +475,7 @@
           before { Flipper.disable(:decision_review_delay_evidence) }
 
           it 'does not call "#submit_evidence_to_central_mail!"' do
-            supplemental_claim.update(status: 'success')
+            supplemental_claim.update(status: 'complete')
 
             expect(supplemental_claim).not_to have_received(:submit_evidence_to_central_mail!)
           end
diff --git a/modules/appeals_api/spec/sidekiq/appeals_api/evidence_submission_backup_spec.rb b/modules/appeals_api/spec/sidekiq/appeals_api/evidence_submission_backup_spec.rb
index a029cab07ac..b961a8b5c80 100644
--- a/modules/appeals_api/spec/sidekiq/appeals_api/evidence_submission_backup_spec.rb
+++ b/modules/appeals_api/spec/sidekiq/appeals_api/evidence_submission_backup_spec.rb
@@ -18,12 +18,24 @@
            upload_submission: create(:upload_submission, status: 'uploaded', guid: SecureRandom.uuid))
   end
 
+  let(:evidence_submission_appeal_with_old_uploaded_status_updates) do
+    create(:evidence_submission,
+           supportable: create(:notice_of_disagreement, status: 'submitted'),
+           upload_submission: create(:upload_submission, status: 'uploaded', guid: SecureRandom.uuid))
+  end
+  let(:status_update_submitted) do
+    create(:status_update,
+           to: 'submitted',
+           status_update_time: 92.days.ago,
+           statusable: evidence_submission_appeal_with_old_uploaded_status_updates.supportable)
+  end
+
   it_behaves_like 'a monitored worker'
 
   # rubocop:disable RSpec/SubjectStub
   describe '#perform' do
     before do
-      allow(subject).to receive(:evidence_to_submit).and_return(
+      allow(subject).to receive(:evidence_to_submit_by_status).and_return(
         [
           evidence_submission_appeal_success,
           evidence_submission_appeal_complete
@@ -31,6 +43,13 @@
       )
       allow(evidence_submission_appeal_success).to receive(:submit_to_central_mail!)
       allow(evidence_submission_appeal_complete).to receive(:submit_to_central_mail!)
+
+      allow(subject).to receive(:evidence_to_submit_by_age).and_return(
+        [
+          evidence_submission_appeal_with_old_uploaded_status_updates
+        ]
+      )
+      allow(evidence_submission_appeal_with_old_uploaded_status_updates).to receive(:submit_to_central_mail!)
     end
 
     context 'when the delay evidence feature is enabled' do
@@ -41,6 +60,7 @@
 
         expect(evidence_submission_appeal_success).to have_received(:submit_to_central_mail!)
         expect(evidence_submission_appeal_complete).to have_received(:submit_to_central_mail!)
+        expect(evidence_submission_appeal_with_old_uploaded_status_updates).to have_received(:submit_to_central_mail!)
       end
     end
 
@@ -50,29 +70,23 @@
       it 'does not take any action' do
         subject.perform
 
-        expect(subject).not_to have_received(:evidence_to_submit)
+        expect(subject).not_to have_received(:evidence_to_submit_by_status)
         expect(evidence_submission_appeal_success).not_to have_received(:submit_to_central_mail!)
         expect(evidence_submission_appeal_complete).not_to have_received(:submit_to_central_mail!)
+        expect(evidence_submission_appeal_with_old_uploaded_status_updates)
+          .not_to have_received(:submit_to_central_mail!)
       end
     end
   end
   # rubocop:enable RSpec/SubjectStub
 
-  describe '#evidence_to_submit' do
-    it 'returns evidence in "uploaded" status when appeal is in "success" status' do
-      evidence = create(:evidence_submission,
-                        supportable: create(:supplemental_claim, status: 'success'),
-                        upload_submission: create(:upload_submission, status: 'uploaded', guid: SecureRandom.uuid))
-
-      expect(subject.evidence_to_submit).to include(evidence)
-    end
-
+  describe '#evidence_to_submit_by_status' do
     it 'returns evidence in "uploaded" status when appeal is in "complete" status' do
       evidence = create(:evidence_submission,
                         supportable: create(:notice_of_disagreement, status: 'complete'),
                         upload_submission: create(:upload_submission, status: 'uploaded', guid: SecureRandom.uuid))
 
-      expect(subject.evidence_to_submit).to include(evidence)
+      expect(subject.evidence_to_submit_by_status).to include(evidence)
     end
 
     it 'returns evidence in "uploaded" status when appeal is in "error" status' do
@@ -80,7 +94,7 @@
                         supportable: create(:supplemental_claim, status: 'error'),
                         upload_submission: create(:upload_submission, status: 'uploaded', guid: SecureRandom.uuid))
 
-      expect(subject.evidence_to_submit).to include(evidence)
+      expect(subject.evidence_to_submit_by_status).to include(evidence)
     end
 
     it 'does not return evidence when evidence not in "uploaded" status' do
@@ -88,7 +102,15 @@
                         supportable: create(:notice_of_disagreement, status: 'success'),
                         upload_submission: create(:upload_submission, status: 'received', guid: SecureRandom.uuid))
 
-      expect(subject.evidence_to_submit).not_to include(evidence)
+      expect(subject.evidence_to_submit_by_status).not_to include(evidence)
+    end
+
+    it 'does not returns evidence in "uploaded" status when appeal is in "success" status' do
+      evidence = create(:evidence_submission,
+                        supportable: create(:supplemental_claim, status: 'success'),
+                        upload_submission: create(:upload_submission, status: 'uploaded', guid: SecureRandom.uuid))
+
+      expect(subject.evidence_to_submit_by_status).not_to include(evidence)
     end
 
     it 'does not return evidence in "uploaded" status when appeal is still in "submitted" status' do
@@ -96,7 +118,69 @@
                         supportable: create(:supplemental_claim, status: 'submitted'),
                         upload_submission: create(:upload_submission, status: 'uploaded', guid: SecureRandom.uuid))
 
-      expect(subject.evidence_to_submit).not_to include(evidence)
+      expect(subject.evidence_to_submit_by_status).not_to include(evidence)
+    end
+  end
+
+  describe '#evidence_to_submit_by_age' do
+    it 'returns evidence in "uploaded" status when appeal is in "submitted" status' do
+      # appeal over 24 hours old so should be returned
+      nod = create(:notice_of_disagreement, status: 'submitted')
+      # status update record for appeal
+      create(:status_update,
+             to: 'submitted',
+             status_update_time: 5.days.ago,
+             statusable: nod)
+      old_evidence1 = create(:evidence_submission,
+                             supportable: nod,
+                             upload_submission: create(:upload_submission,
+                                                       status: 'uploaded',
+                                                       guid: SecureRandom.uuid))
+      old_evidence2 = create(:evidence_submission,
+                             supportable: nod,
+                             upload_submission: create(:upload_submission,
+                                                       status: 'uploaded',
+                                                       guid: SecureRandom.uuid))
+
+      # appeal less than 24 hours old
+      new_evidence = create(:evidence_submission,
+                            supportable: create(:notice_of_disagreement, status: 'submitted'),
+                            upload_submission: create(:upload_submission, status: 'uploaded', guid: SecureRandom.uuid))
+      # corner case, two status records, should use the 'newest'(1 hour old one) for appeal
+      # age calc, and since its only 1 hour old since submitted to CM, this evidence submission
+      # should not be uploaded yet
+      create(:status_update,
+             to: 'submitted',
+             status_update_time: 5.days.ago,
+             statusable: new_evidence.supportable)
+      create(:status_update,
+             to: 'submitted',
+             status_update_time: 1.hour.ago,
+             statusable: new_evidence.supportable)
+
+      # appeal older than 24 hours, no status update so uses created at timestamp to calc age
+      old_evidence_no_submitted_status_update = create(:evidence_submission,
+                                                       supportable: create(:notice_of_disagreement,
+                                                                           status: 'submitted',
+                                                                           created_at: 2.days.ago),
+                                                       upload_submission: create(:upload_submission,
+                                                                                 status: 'uploaded',
+                                                                                 guid: SecureRandom.uuid))
+
+      # appeal less than 24 hours old, no status update so uses created at timestamp to calc age
+      new_evidence_no_submitted_status_update = create(:evidence_submission,
+                                                       supportable: create(:notice_of_disagreement,
+                                                                           status: 'submitted',
+                                                                           created_at: 1.minute.ago),
+                                                       upload_submission: create(:upload_submission,
+                                                                                 status: 'uploaded',
+                                                                                 guid: SecureRandom.uuid))
+      expect(subject.evidence_to_submit_by_age).to include(old_evidence1)
+      expect(subject.evidence_to_submit_by_age).to include(old_evidence2)
+      expect(subject.evidence_to_submit_by_age).to include(old_evidence_no_submitted_status_update)
+
+      expect(subject.evidence_to_submit_by_age).not_to include(new_evidence)
+      expect(subject.evidence_to_submit_by_age).not_to include(new_evidence_no_submitted_status_update)
     end
   end
 end