Search for related WP primarily in the same project

app/seeders/demo_data/work_package_seeder.rb

@@ -161,9 +161,12 @@ module DemoData
 
     def create_relations(attributes)
       Array(attributes[:relations]).each do |relation|
+        root_work_package = WorkPackage.find_by!(subject: attributes[:subject])
+        to_work_package =  WorkPackage.find_by(subject: relation[:to], project: root_work_package.project)
+        to_work_package =  WorkPackage.find_by!(subject: relation[:to]) unless to_work_package.nil?
         create_relation(
-          to:   WorkPackage.find_by!(subject: relation[:to]),
-          from: WorkPackage.find_by!(subject: attributes[:subject]),
+          to: to_work_package,
+          from: root_work_package,
           type: relation[:type]
         )
       end