Hi, I had an old and deprecated Master/Slave (M/S) datastore and I trying to pass its content to a new Master/Slave (M/S) datastore as is expained here : https://developers.google.com/appengine/docs/adminconsole/migration#Deploying_Your_New_HRD_Application Where it say I have to : "appcfg.py update myapp/" where have I to type that ?