Answer: Consult your GM. It's up to them whether it's an either-or (keep just the old equipment, or take just the new), or a both.
If it were me, I'd say that list is the new equipment list is what those starting characters have earned on their way to Rank 9. What your DH character has is the equipment they've earned on their way to Rank 9. It's not like you become part of a Death cult at Rank 9 and the welcome pack includes two Master Crafted powerswords.
I might hand over some things on the new list, and give players the option to trade for/buy some of the rest, but I don't think it makes sense to replace all the old equipment, or equally, to just give the character both lots.