I’m sorry, I didn’t fully understand your question.

Are you asking about something in Jain history or Jain scriptures that was burned and lost?

If you mean Jain tradition, one well-known topic is the loss of many ancient Jain scriptures over time, especially after periods of famine and decline in memorized tradition. But I would need a little more context to answer accurately.

Could you please rephrase your question or tell me what “again” refers to?