While the Japanese version of Crystal uses the updated International Pokémon sprites as a basis for their new animated ones, Jynx still uses her original dark-skinned design. During the actual trade animation, the initial window was made wider, as to allow for the longer Pokémon/Player names. Meanwhile, in the international release, due to the lack of space, it is horizontally aligned. In the Japanese version, the Pokémon trading screen is vertically aligned. The copyright dates were also updated accordingly, both here and on the introduction cutscene. The title screen had its logo changed to the international equivalent.
(Source: Source code: pmcsrc/HEADER.DMG) Title Screen