function unique_id()

The function unique_id() has changed in 3.2 from 3.1

In 3.1 it returned a unique value that was 16 characters long in 3.2 it is returning 12 characters.

This is a problem with backup/restore as the backup is adding 12 characters but the restore in the preg_match (includes/acp/acp_database.php - line 401) is still expecting 16 which means that no backup files are available to restore.

I do not know if there are any other areas where this may be an issue but I believe that the unique_id function is used in some extensions.