id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
13069	Update on Primary Key performs Insert	j.dobos@…	nobody	"When having a simple table with one column that is set to primary_key=True, changing its value in admin pages executes an insert instead of an update. According to the documentation: http://docs.djangoproject.com/en/dev/ref/models/instances/#how-django-knows-to-update-vs-insert I believe this behaviour is wrong.

Reproduction Steps:
1) Create simple model with one column primary_key=True (tested on charfield)
2) Insert value in the admin page
3) Attempt to change the value

Expected Result:
- New value replaces the old one

Actual Result:
- New row is added, the old value stays in the DB too"		closed	Uncategorized	1.1		invalid	Primary Key, Update, Insert		Unreviewed	0	0	0	0	0	0