The primary issue users face when running legacy cards built on v1 is a complete failure of the side hair layers to load. During updates to versions like 4.2a, mod developers completely restructured the internal list files. This shift changed the numerical ID mapping assigned to each hair layout. If you try to load a character card that requires the legacy v1 configuration inside an environment running v4.2a , the engine will not match the ID strings, leaving the character bald or glitched. Installation Conflict Management

The new hairstyles will now be available in the character creator. Tips for Customizing AA1 Hair in Koikatsu