Missing Activities and Closed Activities navigation bar item on Form during customization.

Hi,

Recently we had to reorder the navigation link that appears for one of our entities form. Basically we wanted Activities and Closed Activities to be the last one there in the left navigation pane.

However while opening our form for customization, the links for the activities were missing.

This blog post came to our rescue

http://blog.customereffective.com/blog/2011/09/how-to-get-the-microsoft-crm-closed-activities-nav-bar-link-back-if-you-delete-it.html

Hope it helps.