texture maps apply to the models they are made for, since the p5 characters have different geometries it would be ALMOST inpossible for them to be 100% compatible, even if they were mapped to be very similar there would be some differences. Hopefully, they would be similar enough , however, that you would be able to copy and paste your old textures onto a new template. The textures you have purchased WILL still work on the character they were created for, but very likely not on the new characters unless you do quite a bit of editing.