Well might you use the term mapping for there is a remapping tool in FM.
https://www.ibm.com/support/knowledgecenter/SSEP7J_10.2.2/com.ibm.swg.ba.cognos.ug_fm.10.2.2.doc/t_remap_an_object_to_a_new_source.html
http://www.cognoise.com/index.php?topic=283...
https://www.ibm.com/support/knowledgecenter/SSEP7J_10.2.2/com.ibm.swg.ba.cognos.ug_fm.10.2.2.doc/t_remap_an_object_to_a_new_source.html
http://www.cognoise.com/index.php?topic=283...