Shah Khalil Allah moved to Yazd in 1815, probably out of concern for his Indian followers, who used to travel to Persia to see their Imam and for whom Yazd was a much closer and safer destination than Kahak.
In 1815, Shah Khalil Allah moved to Yazd, likely because of concerns for his Indian followers who would journey to Persia to meet their Imam. Yazd proved to be a safer and more accessible destination compared to Kahak.