System Transfer

System Transfer is functionality that will be added with the 2.0.0-2 June 6/7 2011 system update, which allows you to transfer DSiWare, recorded audio from the Nintendo DSi Sound title, "internal memory" pictures, some wifi data(?), from DSi to 3DS. On DSi this is done with a System Transfer app that would be downloaded from DSi Shop, while on 3DS System Transfer is accessible in the System Settings. System Transfer can also be used to transfer 3DSWare to other 3DS systems.

DSi System Transfer

With the DSiWare DSi->3DS transfer, savegames are not transferred. This likely blocks DSiWareHax usage on 3DS entirely. Actual protocol info etc is unknown currently since the update isn't released yet, but presumably when transferring DSiWare only the ticket would be transferred and the 3DS would download the latest title from NUS.