What was unusual about Hemadpant's writing process, and why did this create a problem for finding the book's summary?

According to Chapter 53, Hemadpant had a very frugal nature and never let a scrap of paper go to waste. He would write the chapters of the Shri Sai Satcharitra on these scraps and send them directly to the printer. The final chapter met this same fate, having been written on miscellaneous pieces of paper. The problem arose when, after his passing, his son and others searched these records and discovered that while the chapter itself existed, the promised summary could not be found within them.