Hi Lolwane,
This can only be done through "promotion Manager" and this features are available in SAP Business Objects BOE 4.1/IPS 4.2 with BODS 4.2 and Information Steward 4.2,
Please refer the below links for DQM content migration througn "promotion manager" exctly the same features are there in 4.2 version
SAP IS4.0 Code Promotion:
Links:
http://scn.sap.com/community/information-steward/blog/2012/09/25/sap-is40-code-promotion
How to create backup of Cleansing Package to LCMBIAR of SAP Information Steward 4.1
Links:
Migrate Cleansing Package from Test to Production
Links:
https://scn.sap.com/docs/DOC-48586
Administrator Guide for IS 4.2 Page Number 266:
Links:
http://help.sap.com/businessobject/product_guides/sboIS42/en/is_421_admin_en.pdf
SAP Data Services 4.2 and Information Steward 4.2 now "Release to Customer"
Links:
http://scn.sap.com/docs/DOC-50190
Thanks,
Daya