Sorry i dont have any, but is it me or do alot of the Iksar keep refering to Cab.. Sounds like it still exists or something.. Like one for example states, 'When we return to Cab....blah blah blah..' sorry thats all that really sticks out in my head.. Give my Iksar great hope in one day returning to her home land..
There is some Iksar lore from back in the day here: http://allakhazam.com/lore/Lore_List.html You'll have to look through and see which ones are the Iksar stories though.
The other continents, such as Kunark and Faydwer are as known just cut off due to the oceans being unsailable. The iksar as of when they set off ruled Kunark completely again.