Hi Phani,
Normally, there are always incompatibility issues when you try to migrate content from previous bods versions to the latest one....and you will get such errors as [Data Services Repository 'REPO_96ad7d2a-e903-487c-84e4-65843aa32821' version-14.0.0.0 is incompatible with the version-14.2.1. (BODI-3015002)] and the solution is to upgrade your old repository to the current one.you can refer to the SAP BODS Upgrade guide on how to do this using the repository manger. Let me know if you need any help to do this.