Global Confluence activity link broken when clicking on it from space activity

Summary

Global Confluence activity link broken when clicking on it from space activity

Environment

• Confluence 6.1.0
  *

Steps to Reproduce

1. Enable Confluence Usage Stats addon from Manage add-ons screen.
2. Visit ant space activity screen, it should be under http://<base.url>/spaces/usage/report.action?key=<space.key>
3. Click on Global Confluence activity

Expected Results

To be redirected to Global Confluence activity screen in administration

Actual Results

Redirected to Page Not Found screen as http://<base.url>/admin/globalusage.action doesn't exist anymore. It was changed to http://<base.url>/admin/usage/globalusage.action

Notes

This used to work with previous confluence versions. 

Looks like the below workaround is only working in  6.1.0, 6.6.2 from ** later version, the work around is not working.

Workaround

1. Download usage-tracking-plugin-1.0.1.jar
2. Go to the Add-ons management page and click Upload an Add-on
3. Click choose file and select the jar you have just downloaded
4. Wait for the installation to complete and test the link again