This was first described here: http://moodle.org/mod/forum/discuss.php?d=28163#134386

PostgreSQL appears to truncate table names when assigning id's.

mdl_assignment_submissions id becomes

mdl_assignment_submissio_id_seq -

mdl_dialogue_conversations id becomes

mdl_dialogue_conversatio_id_seq

[Also reported this as a separate bug under the assignment component.]

Throws errors - affects backup/restore, import data; not sure what else.

WB