KF;

To make a long story short.

Forms are not outdated. They are uptodated by new moves and theory with the practitioners.

1. Chen Fa Ke added more small circles and folding or Hui Zhuan. The forms from Chen Chang Xing become Xing Jia.

2. Cheng Ting Hua studied Shuai Jiao first. He was the best and favorite student of Dong Hai Zhuang. Cheng incorporated Shuai Jiao into Ba Gua Zhang.

3. Yi Fu incorporated Shaolin Lo Han and Tang Tui into Ba Gua.

etc