Exception after removing a duplicated way found with the validator

[anonymous]

What steps will reproduce the problem?
I haven't tried to reproduce it, but here's what I did:

1. Use the validator. It finds a duplicated way. (There were actually 3 ways with the same nodes. Originally they all had the same tags. One had been edited.)
2. Remove the two unedited copies, and upload.
3. Click back in the validation results box.

What is the expected result?
No exception.

What happens instead?
Exception.

Please provide any additional information below. Attach a screenshot if
possible.

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2011-04-26 01:31:34
Last Changed Author: bastiK
Revision: 4064
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2011-04-25 20:32:26 +0200 (Mon, 25 Apr 2011)
Last Changed Rev: 4064

Identification: JOSM/1.5 (4064 en)
Memory Usage: 63 MB / 245 MB (15 MB allocated, but free)
Java version: 1.6.0_24, Sun Microsystems Inc., Java HotSpot(TM) Client VM
Operating system: Linux
Dataset consistency test: No problems found


org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive must be part of the dataset: {Way id=34686541 version=1 MDT> nodes=[]}
	at org.openstreetmap.josm.data.osm.OsmPrimitive.checkDataset(OsmPrimitive.java:343)
	at org.openstreetmap.josm.data.osm.OsmPrimitive.getReferrers(OsmPrimitive.java:1287)
	at org.openstreetmap.josm.data.validation.tests.DuplicateWay.isFixable(DuplicateWay.java:251)
	at org.openstreetmap.josm.data.validation.TestError.isFixable(TestError.java:216)
	at org.openstreetmap.josm.gui.dialogs.ValidatorDialog.setSelection(ValidatorDialog.java:391)
	at org.openstreetmap.josm.gui.dialogs.ValidatorDialog.access$400(ValidatorDialog.java:67)
	at org.openstreetmap.josm.gui.dialogs.ValidatorDialog$ClickWatch.mouseClicked(ValidatorDialog.java:434)
	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253)
	at java.awt.Component.processMouseEvent(Component.java:6292)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
	at java.awt.Component.processEvent(Component.java:6054)
	at java.awt.Container.processEvent(Container.java:2041)
	at java.awt.Component.dispatchEventImpl(Component.java:4652)
	at java.awt.Container.dispatchEventImpl(Container.java:2099)
	at java.awt.Component.dispatchEvent(Component.java:4482)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4247)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
	at java.awt.Container.dispatchEventImpl(Container.java:2085)
	at java.awt.Window.dispatchEventImpl(Window.java:2478)
	at java.awt.Component.dispatchEvent(Component.java:4482)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:644)
	at java.awt.EventQueue.access$000(EventQueue.java:85)
	at java.awt.EventQueue$1.run(EventQueue.java:603)
	at java.awt.EventQueue$1.run(EventQueue.java:601)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
	at java.awt.EventQueue$2.run(EventQueue.java:617)
	at java.awt.EventQueue$2.run(EventQueue.java:615)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:614)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122