Double entries in Java Cache Viewer/Applications after javaws -import http://nicole1.sfbay.sun.com:8080/JavawsMustangIntegTest/extensionInstaller/install_demo.jnlp

All platforms:
To reproduce:
- install build 23 (latest PIT build)
- clean the cache
- javaws -import http://nicole1.sfbay.sun.com:8080/JavawsMustangIntegTest/extensionInstaller/install_demo.jnlp
- open Java Cache Viewer/Applications
- you will see same application repeated twice: Java Web Start Extension Installer -- Installing Demo Extension
- open Java Cache Viewer/Resources
- you will see there: 6 entries: testdemo.jar, installer.jar, testdemo.jnlp, install_demo.jnlp, demo_ext.jnlp, Button.jpg

Same scenario for build 22 you can see only one entry in Java Cache Viewer/Applications : Java Web Start Extension Installer -- Installing Demo Extension
and only 5 entries in Java Cache Viewer/Resources - install_demo.jnlp is missing !?
Which behavior is correct?