quietrob - Aiko 3 stuff is incompatible with A4 because it's a completely different figure. If you wanted to put A3 clothes on A4 you would either have to use magnets or use something like Wardrobe Wizard 2, although I'm not sure if she's compatible with that at the moment.
A4 can use V4 clothes (with the A4 magnets from Daz) & her textures because they use the same mesh.