diff --git a/db/migrate/20201202080338_issue3270_selector_update.rb b/db/migrate/20201202080338_issue3270_selector_update.rb
new file mode 100644
index 000000000..766998836
--- /dev/null
+++ b/db/migrate/20201202080338_issue3270_selector_update.rb
@@ -0,0 +1,42 @@
+class Issue3270SelectorUpdate < ActiveRecord::Migration[5.2]
+  def change
+
+    # return if it's a new setup
+    return if !Setting.exists?(name: 'system_init_done')
+
+    Overview.find_each do |overview|
+      fix_selector(overview)
+    end
+    Trigger.find_each do |trigger|
+      fix_selector(trigger)
+    end
+    Job.find_each do |job|
+      fix_selector(job)
+    end
+  end
+
+  def fix_selector(object)
+    fixed = false
+    object.condition.each do |_attribute, attribute_condition|
+      next if attribute_condition['operator'] != 'within next (relative)' && attribute_condition['operator'] != 'within last (relative)'
+
+      attribute_condition['operator'] = if attribute_condition['operator'] == 'within next (relative)'
+                                          'before (relative)'
+                                        else
+                                          'before (after)'
+                                        end
+
+      fixed = true
+    end
+
+    return if !fixed
+
+    save(object)
+  end
+
+  def save(object)
+    object.save
+  rescue => e
+    Rails.logger.error "Migration Issue3270SelectorUpdate failed: #{object.class} - #{object.id} - #{e.inspect}."
+  end
+end
diff --git a/db/seeds/overviews.rb b/db/seeds/overviews.rb
index f67c69f2d..71630793a 100644
--- a/db/seeds/overviews.rb
+++ b/db/seeds/overviews.rb
@@ -68,7 +68,7 @@ Overview.create_if_not_exists(
       pre_condition: 'current_user.id',
     },
     'ticket.pending_time' => {
-      operator: 'within next (relative)',
+      operator: 'before (relative)',
       value:    0,
       range:    'minute',
     },
@@ -119,7 +119,7 @@ Overview.create_if_not_exists(
       value:    Ticket::State.by_category(:pending_reminder).pluck(:id),
     },
     'ticket.pending_time' => {
-      operator: 'within next (relative)',
+      operator: 'before (relative)',
       value:    0,
       range:    'minute',
     },
@@ -143,7 +143,7 @@ Overview.create_if_not_exists(
   role_ids:  [overview_role.id],
   condition: {
     'ticket.escalation_at' => {
-      operator: 'within next (relative)',
+      operator: 'before (relative)',
       value:    '10',
       range:    'minute',
     },