There's some confusion on the location of the Lulusia Kingdom.
Kamabakka is in a island in the Paradise, as seems none of the SH was send by Kuma to the NW, and we knew Sanji had never been on FI before.
Lulusia seems to be a Island next to Kamabakka as the Revo Commanders indicated, so its also in the Paradise.
Ace cover story happend in the Paradise, as Banaro island is close to W7, so he meet the Milk girl in the Paradise.
But the Princess of Lulusia was captured on the New Wolrd, as both Dressrosa and Prodence are NW nations, so they entered Marijoa from the NW Red Port.
And in this chapter they say Lulusia is in the NW, and also, why didnt Sabo asked to bem rescued by Karasu, Morley or Dragon if he is in the neighbout Island to Kamabakka?