You need to use the API to import your data from CSV (which you can export from your other database). That’s the only method that will do what you want.
Well I was trying to download this branch using bazaar but I know nothing about version control so I am having a hard time using bazaar to download that branch.
Sometime back, there was a tutorial/FAQ on Launchpad on how to do that but I just could not find it. Could you plz provide this as a zip package or plz tell me how to get the code.