After becoming a rogue in the lvl 40 dark zone, exit the application. Restart the application and the character will resume from the Lv30 dark zone. After the rogue status expires, the countdown to be transferred to the Lv40 dark zone will begin, but you can reset the countdown by going rogue during the countdown. It is possible to stay in the Lv 30 dark zone by maintaining the rogue status. It is even easier to maintain the rogue status if you form a group.
This can be easily exploited to farm exotic parts in the almost empty lvl 30 dark zone.
https://drive.google.com/file/d/1XTV7KdJydp14_jFhakNQmXrpOirju_oQ/view: (https://drive.google.com/file/d/1XTV7KdJydp14_jFhakNQmXrpOirju_oQ/view)