I am trying to copy some data from one database to another. I fetch an EntityCollection from the first database. This is successful.

Next I open a connection to the second database and attempt to save (insert) each of the entities in that database. SaveEntity returns true but the data is not inserted.

Is this a code problem or something else?

Using dataAdapter As New DataAccessAdapter("SecondDatabaseConnectionStringHere")
            For Each item As IEntity2 In dataCollection
                item.IsNew = True
                logger.Debug("Saved: {0}", dataAdapter.SaveEntity(item))
            Next
End Using

You have to reset the complete entity by setting the IsChanged property (to True) from all fields as well....

Also make sure IsDirty is set to true for each entity.