Fixed Bug #1083.

diff --git a/mod/exercise/lib.php b/mod/exercise/lib.php
index 08ab30d7b008e064c15fdf6adbb61ddc5bbe6e15..08f8ae3e08c7d4b2418b20b702565c950899b40f 100644 (file)
--- a/mod/exercise/lib.php
+++ b/mod/exercise/lib.php
@@ -686,7 +686,7 @@ function exercise_copy_assessment($assessment, $submission, $withfeedback = fals
 
        if ($grades = get_records("exercise_grades", "assessmentid", $assessment->id)) {
                foreach ($grades as $grade) {
-
+            unset($grade->id); // clear id, insert record now seems to believe it!
             if (!$withfeedback) {
                                $grade->feedback = '';
                        }