diff --git a/workflow/engine/src/ProcessMaker/BusinessModel/Lists.php b/workflow/engine/src/ProcessMaker/BusinessModel/Lists.php
index 0302f2c20..b53f082ab 100644
--- a/workflow/engine/src/ProcessMaker/BusinessModel/Lists.php
+++ b/workflow/engine/src/ProcessMaker/BusinessModel/Lists.php
@@ -6,6 +6,7 @@ use G;
 use Criteria;
 use PMLicensedFeatures;
 use ProcessMaker\Model\Delegation;
+use ProcessMaker\Model\User;
 use UsersPeer;
 
 /**
@@ -213,30 +214,51 @@ class Lists
         $result = $list->loadList($userUid, $filters);
         if (!empty($result)) {
             foreach ($result as &$value) {
+                // For backward compatibility with "light" endpoints, we need to cast to string
+                $value['APP_NUMBER'] = (string)$value['APP_NUMBER'];
+                $value['DEL_INDEX'] = (string)$value['DEL_INDEX'];
+
                 if (isset($value['DEL_PREVIOUS_USR_UID'])) {
                     $value['PREVIOUS_USR_UID'] = $value['DEL_PREVIOUS_USR_UID'];
                     $value['PREVIOUS_USR_USERNAME'] = $value['DEL_PREVIOUS_USR_USERNAME'];
                     $value['PREVIOUS_USR_FIRSTNAME'] = $value['DEL_PREVIOUS_USR_FIRSTNAME'];
                     $value['PREVIOUS_USR_LASTNAME'] = $value['DEL_PREVIOUS_USR_LASTNAME'];
+                } elseif (!empty($value["USR_ID"])) {
+                    $user = User::where("USR_ID", $value["USR_ID"])->first();
+                    $value["PREVIOUS_USR_UID"] = $value["DEL_PREVIOUS_USR_UID"] = $user->USR_UID;
+                    $value["PREVIOUS_USR_USERNAME"] = $value["DEL_PREVIOUS_USR_USERNAME"] = $user->USR_USERNAME;
+                    $value["PREVIOUS_USR_FIRSTNAME"] = $value["DEL_PREVIOUS_USR_FIRSTNAME"] = $user->USR_FIRSTNAME;
+                    $value["PREVIOUS_USR_LASTNAME"] = $value["DEL_PREVIOUS_USR_LASTNAME"] = $user->USR_LASTNAME;
                 }
+
                 if (isset($value['DEL_DUE_DATE'])) {
                     $value['DEL_TASK_DUE_DATE'] = $value['DEL_DUE_DATE'];
                 }
+
                 if (isset($value['APP_PAUSED_DATE'])) {
                     $value['APP_UPDATE_DATE'] = $value['APP_PAUSED_DATE'];
                 }
+
                 if (isset($value['DEL_CURRENT_USR_USERNAME'])) {
                     $value['USR_USERNAME'] = $value['DEL_CURRENT_USR_USERNAME'];
                     $value['USR_FIRSTNAME'] = $value['DEL_CURRENT_USR_FIRSTNAME'];
                     $value['USR_LASTNAME'] = $value['DEL_CURRENT_USR_LASTNAME'];
                     $value['APP_UPDATE_DATE'] = $value['DEL_DELEGATE_DATE'];
                 }
+
+                if (isset($value['DEL_CURRENT_TAS_TITLE']) && $value['DEL_CURRENT_TAS_TITLE'] != '') {
+                    $value['APP_TAS_TITLE'] = $value['DEL_CURRENT_TAS_TITLE'];
+                } elseif (!empty($value["TAS_TITLE"]) && empty($value["APP_TAS_TITLE"])) {
+                    $value["APP_TAS_TITLE"] = $value["TAS_TITLE"];
+                }
+
                 if (isset($value['APP_STATUS'])) {
                     $value['APP_STATUS_LABEL'] = G::LoadTranslation("ID_{$value['APP_STATUS']}");
                 }
 
-
-                //$value = array_change_key_case($value, CASE_LOWER);
+                if (!empty($value["PRO_TITLE"]) && empty($value["APP_PRO_TITLE"])) {
+                    $value["APP_PRO_TITLE"] = $value["PRO_TITLE"];
+                }
             }
         }
         $response = array();