The first Wing Chun school I attended was in the Ip Ching lineage. When I was there, I learned all 3 empty hand forms and the wooden dummy form. Then I switched to the Leung Sheung lineage. As of this writing, the Sifu in this lineage has me working on Sil Lum Tao and Chum Kiu. He told me I should also practice on the dummy...not just the form, but also just improvised play. I was about to start playing the dummy form the other day when it hit me: the Leung Sheung lineage probably plays the dummy much differently than what I have been doing, and I haven't been shown that yet. So then the question came to me: should I keep practicing Biu Jee and Mook Jong the way I already know? Should I hold off on it since, in this Sifu's eyes, I am now at the "Chum Kiu" level? Or would it be better to practice them so I can at least keep the forms fresh in my mind? I reached out to Sifu about this question, and I am eager to hear his answer. However, I was just curious what any of the instructors here might advise a lineage transplant student to do. Obviously in my case, the only answer that matters is what my Sifu tells me. Still, sometimes I like to pose these situations to others to inspire conversation.