Cannot delete watchers from an issue that was imported using the Project Import

jira=# select * from userassociation where association_type = 'WatchIssue' and sink_node_id = 10008;
 source_name | sink_node_id | sink_node_entity | association_type | sequence |          created           
-------------+--------------+------------------+------------------+----------+----------------------------
 user 1      |        10008 | Issue            | WatchIssue       |          | 2013-11-01 18:36:20.324+00
 user 2      |        10008 | Issue            | WatchIssue       |          | 2013-11-01 18:36:20.321+00
 sysadmin    |        10008 | Issue            | WatchIssue       |          | 2013-11-01 18:36:20.314+00
(3 rows)

jira=# select id, project, issuenum, watches from jiraissue where project = 10003 and id = 10008;
  id   | project | issuenum | watches 
-------+---------+----------+---------
 10008 |   10003 |        3 |       0
(1 row)

jira=# 

select count(*) as total, sink_node_id, i.id, i.watches, p.pkey, i.issuenum 
  from userassociation, jiraissue i , project p
 where association_type = 'WatchIssue' 
 and i.id = sink_node_id
 and i.project = p.id
group by sink_node_id, i.id, i.watches, p.pkey, i.issuenum 
having count(*) != (select watches from jiraissue where jiraissue.id = userassociation.sink_node_id);

UPDATE jiraissue
SET watches = 
(SELECT COUNT(*) 
FROM userassociation
WHERE association_type = 'WatchIssue' 
AND userassociation.sink_node_id = jiraissue.id);