Mod note- PLEASE don't start multiple threads about the same topic. It just clutters the board and makes it harder for you to get the right answer. I deleted your other two threads and left this one since this is in the right folder.
Now, down to business. An overload leaf is just that, a leaf designed to support the leaf pack in an overload situation. That 3-leaf AAL is NOT an overload and wont function as such. If you do install the new leaf pack and the 3-leaf AAL, I'd recommend not using the overload since you probably wont need it anyways with all those leafs in the combined new pack.