diff --git a/sao/src/model.js b/sao/src/model.js
index e7e4879bda..8e85c1d2a1 100644
--- a/sao/src/model.js
+++ b/sao/src/model.js
@@ -512,6 +512,7 @@
                 record = this[i];
                 if (record.get_loaded([field]) || changed || record.id < 0) {
                     if (prev) {
+                        prev.load(field, false);
                         index = prev.field_get(field);
                     } else {
                         index = null;