It doesn't matter when you are in any given timeline - the T-1000 is still laser focused on finding John Connor and completing its mission. The search is taking the liquid metal killing machine through Mortal Kombat 1 as part of the latest Khaos Reigns update. See just how adaptable it is in the official gameplay trailer:

The new era of peace in Mortal Kombat 1 survived its first challenge, but it couldn't last. In the latest expansion announced with a trailer at this year's San Diego Comic-Con -- Khaos Reigns! The cleric of chaos Havik has come from another reality to burn everything down, but he isn't alone. Kombat Pack 2 brings twisted versions of klassic characters and a chaotic group of multimedia guest characters. Watch the trailer and see for yourself: