If a model becomes a Daemon Prince, but already has some Boons (e.g. fleshmetal, hatred etc...), does he get to keep them as a DP?
If a Sorcerer becomes a DP, does he keep his spells & Mastery levels?
Do models get to keep wargear i.e. Sigil, Familiars etc?
also finally if an unmarked model becomes a DP, do they have to pick a mark? (DP's have to be deadicated to a chaos god...)