In Jain Dharma, jīva (ātmā) are infinite in number, not finite. So it is not taught that “one day all souls will finish and all will go to moksh.”

A few key points:

• Souls are ananta: there is no final “last soul.”
• Some souls attain moksha in every time cycle, including in each ara where liberation is possible.
• But not all souls will go to moksha at the same time, because many continue in saṃsāra due to karma.
• Moksha is individual, achieved by each soul through complete destruction of karmas.
• In Jain view, the number of liberated souls increases, but the world of living souls does not become empty, because jīvas are innumerable.

So the correct understanding is:

Yes, in each ara some souls may attain moksha, but no, it does not mean that one day all souls will be gone from existence and all will go to moksha together. The cycle of saṃsāra continues because souls are endless, and liberation happens soul by soul through right faith, right knowledge, and right conduct.