How to enable including content checkbox in Issue Tracking template?

I created a issue tracker list called Krishna

I am able to click “Include Content ” check box .
Now I am going to create a list with “Naveed” list template.

Solution:
Go to C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\FEATURES\IssuesList\ListTemplates\Issues.xml
Replace DontSaveInTemplate="TRUE" like the below and do iisreset.

Have a nice day...