Passage: The OCA originally planned to hold these Games in 2019 rather than 2018, so that Asian Games would be held in the year immediately before the 2020 Summer Olympics instead of two years before. After they were awarded to Indonesia, the OCA backtracked on these plans and kept the Games in 2018, so that they would not interfere with the 2019 Indonesian general election.

Question: Why did the organization hold the event a year earlier?
so that Asian Games would be held in the year immediately before the 2020 Summer Olympics instead of two years before