I am calling it: when Satya goes missing (and Savitri must live up to her name and bring him back), it will be due to the Kaalchakra. Rahukaal will dump Satya into the portal and he will be lost in time or something.
Perhaps. If it so than it would be better Than Killing Satya and then Restoring mortal to immortal. So, there would be some logical explainations too.. Also thanks for posting.