Yes you can transfer your data efficiently using the remote datastore:

http://code.google.com/p/remote-datastore/

You basically read in bulk from one datastore then write in bulk to the other like this

DatastoreService service = DatastoreServiceFactory.getDatastoreService(); RemoteDatastore.divert("http://aversion.latest.first-app-id.appsot.com/remote-datastore ", "first-app-id", "aversion");
QueryResultIteratable results = service.prepare(...);
RemoteDatastore.bypass();
service.put(results);

You need to use cursors to keep your place between reads and writes

On 18 Jul 2010, at 20:34, aswath satrasala wrote:

Any java tools to do this?

On Sun, Jul 18, 2010 at 6:49 PM, Robert Lancer <[email protected] > wrote:
No, you have to create a new one and transfer everything.

On Jul 18, 12:02 am, aswath satrasala <[email protected]>
wrote:
> Hello,
> Is there any way I can rename my app-id.
>
> -Aswath

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