Liu mentions five books he authored (listed in the order they appear in the second paper):
Pocket 20-year Chinese calendar, 1981–2000 (1986).
200-year Chinese calendar, 1821–2020 (1959).
100-year Chinese calendar, 1901–2000 (1979).
Pocket 10-year Chinese calendar (many editions since 1962).
Newly compiled perpetual Chinese calendar, 1840–2050 (1959, 1978, 1984).
You have given the second book above (二百年历表 literally means 200-year Chinese calendar), not the 1959 edition of the last. On the other hand, a new edition is published either because the previous edition is out-of-print, new information is added, or errors have been discovered. The last reason opens the possiblility that Liu might have changed his mind concerning how to handle the 2033–34 irregularity. I doubt this because Liu meticulously lists all errors (long vs short months) in the Wannian Shu between 1910 and 2108, indicating he would mention his own 'error'. Only copies of the 1959 and 1978 editions would settle this issue. —