Yep. Mishin mentioned at Worlds that she doesn't yet have the stamina/focus to perform 6-7 triples after the 3A. So taking out the lutz, the second hardest jump, is just a way for Liza to perform 3A in Japan without making the rest of the program impossible.Point wise, including the 3A instead of the solo 3Lz does not get Liza that big of an advantage.
BUT I think she used this competition solely for the purpose of trying the 3A in the long. Her current layout is not very point efficient since it contains just one 3Lz (her money jump). Not to mention the risk of Zayak since she tries the axel jump 3 times.
By next season her layout will most likely be different. She has so many possibilities, she can bring back her monstruos 2A-3T for example