Retreving Previous versions in NWDI

Hi Folks!!!

Is it possible to rollback to the code changes to older version in the NWDI? I have gone through the help file from the help.sap.com

http://help.sap.com/saphelp_nw70/helpdata/en/44/0d18d725301a78e10000000a1553f6/frameset.htm

I know we can track the changes in the DTR, but is it possible to rollback to the older version while checking-in the activites to the development server.

Any Ideas, how this can be done?

Regards,

Vamshi.