Apparently even the Aitwo segment exists in CG and non-CG variants (the latter on the “Mewtwo Returns” R1 and PAL DVDs). I only heard THAT recently.

If you extrapolate the original airdates, you can manage to place the episodes known in English as “PRINCESS VS. PRINCESS” and “The Purr-fect Hero” such that they would have aired on March 3 and May 5 of 1998, respectively. I can’t remember exactly how I did this but it involves putting “Holiday Hi-Jynx”, “Snow Way Out” and “Pikachu’s Goodbye” in that exact order (even though the last of these was supposedly created to replace episode 38). The information in the Mewtwo LD should be able to point you in the right direction.