With IBM i Access 6.1/7.1, that technology has been updated to use Component Object Model (COM) technology instead of the SDK.
In System i Access for Windows V5R4M0 and below, IBM used the Excel Software Development Kit (SDK) to provide the transfer technology between Excel and IBM i machines. And that change could break your Excel-to-IBM i data transfers. When upgrading to IBM i Access for Windows 6.1 or 7.1 (formerly System i for Windows, Client Access for Windows, etc), IBM changed the technology used for the Excel add-in for IBM i Access.
