update

app/services/api/v1/issues/update_service.rb

@@ -33,7 +33,7 @@ class Api::V1::Issues::UpdateService < ApplicationService
     @pm_project_id = params[:pm_project_id]
     @pm_sprint_id = params[:pm_sprint_id]
     @pm_issue_type = params[:pm_issue_type]
-    @parent_id = params[:parent_id]
+    @root_id = params[:root_id]
     @time_scale = params[:time_scale]
     @add_assigner_ids = []
     @previous_issue_changes = {}
@@ -76,7 +76,7 @@ class Api::V1::Issues::UpdateService < ApplicationService
       @created_issue.pm_project_id = @pm_project_id
       @created_issue.pm_sprint_id = @pm_sprint_id
       @created_issue.pm_issue_type = @pm_issue_type
-      @created_issue.parent_id = @parent_id
+      @created_issue.root_id = @root_id
       @created_issue.time_scale = @time_scale
 
       @updated_issue.updated_on = Time.now