I'm pretty sure only items from the inbox can be transfered.
The thing is, I did the data transfer and then sold my 6230, so didn't get the opportunity to confirm what was transfered.
This was discussed in another thread on HOFO and someone else confirmed for me that only the contents of the inbox were transfered.
As for the K750, the only thing I've ever done with the pc is update the firmware. The Pc software i got with my Se is absolutely appalling and I can't even remember how it works.
Sorry I couldn't be more helpful.