I'm going to suggest that that source is dubious at best, seeing as how it has no cites and the English is quite suspect.
Yes, renewed would probably be the best word.
And no, I'm not really sure who would have renewed the treaty, seeing as how Persia was divided up amongst several competing factions at the time.
Lastly, in the historical treaty it doesn't really seem that the Ottomans ceded lands to Persia but rather stopped controlling (game-wise) lands that had been Persian.
Yes, renewed would probably be the best word.
And no, I'm not really sure who would have renewed the treaty, seeing as how Persia was divided up amongst several competing factions at the time.
Lastly, in the historical treaty it doesn't really seem that the Ottomans ceded lands to Persia but rather stopped controlling (game-wise) lands that had been Persian.