Answer

In the 11th guṇasthāna, called Upaśānta Moha, deluding karma is only pacified, not destroyed. So if it becomes active again, the soul falls back to a lower guṇasthāna. Jain commentaries on this stage say the fall can be very deep, even as low as the first stage, Mithyātva. ( jainqq.org)

Explanation

This stage belongs to the upaśama śreṇi, the “subsiding” path. Because the passions are only suppressed, the state is temporary; once that suppression ends, the soul descends instead of continuing upward. In contrast, the kṣapaka śreṇi is the destructive path that leads forward toward kevalajñāna. ( jainqq.org)

Spiritual Understanding

The main lesson is that mere suppression is not final victory. Jain Dharma teaches that lasting progress comes from destroying moha, not just calming it. That is why the 11th stage is considered unstable compared with the 12th guṇasthāna, Kṣīṇa Moha. ( jainqq.org)

Takeaway

If a soul falls from the 11th guṇasthāna, it returns to a lower stage of spiritual development. The exact lower stage can vary, but the essential point is that the pacified delusion has reasserted itself. ( jainqq.org)