Direct answer
Objectives follow journal display order. Some depend on your choices; follow the active objective in the game.
Result
Geralt now knew how to find the Unseen Elder's lair. He went to fetch Regis, and together they set off to meet the ancient bloodsucker. I can only imagine how difficult a Regis' predicament was. After all, he was about to help his dear friend set a deadly trap for another of his close comrades…
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