An issue may occur when attempting to add a Create script to a filter box.
The issue may be reproduced by adding the following Create script to the comm_type entry on CommunicationFilterBox:
The default value will operate correctly on the filter box, but will lose its value should a user navigate between tabs (e.g. by going back and forth between the Calendar and Groups tabs).
The issue has been resolved in Sage CRM 7.1k and Sage CRM 7.2c.