I made it work with Victoria 4. The Vicky4.2/Aiko4 morphs are compatible with Vicky 4.1/4.0, the problem is to inject them.
There exist inside !DAZ folder somewhere inside "deltas"  folder an AikoBody injection pose, but the problem is that Vicky4 has no Aiko channels inside and inside the AikoBody injection pose there is no master control and all the morphs are hidden.
I solved the problem editing my Vicky4 character adding an empty Aiko channel to all body parts and then edited the injection pose adding control information, unhidding the morphs and deleting the only one readscript inside.
Now it works fine, when I want Aiko it's only click the AikoBody pose and all is done.
Other more simple solution is to use some body morph from your figure that you don't use, for example "Buk".
What you need to do is to replace in the injection pose
all the targetGeom FBMA4AikoBody with targetGeom FBMBulk
replace valueParm FBMA4AikoBody with valueParm FBMBulk
delete the line with readscript. and put the this injeection pose somewhere in the pose folder.
Then apply this pose and the Bulk morph turns into rhe Aiko morph.
As I had no Bulk morph, I had removed it a long time ago I had to do all the edition.
You can do the same with all the morphs, it's a hard workm but once done the poses are very easy to use specially in my case where my Vicky4 character has only 9MB and not 100MB with all the morphs that I never use.

Stupidity also evolves!