Possibly you are running into this problem:
http://support.sas.com/techsup/unotes/SN/018/018939.html
SAS® Enterprise Guide® and the SAS® Add-In for Microsoft Office will not display calculated measures defined in an information map
To find this Tech Support Note, I went to:
http://support.sas.com/techsup and entered
Information Map data item not show Enterprise Guide
into the yellow/gold search field area on the right hand side of the window. This Tech Support Note was the first hit in the list of returned notes.
You should check with Tech Support if this does not fix the issue for your Information Map.
cynthia