Now I use the Team Canjica ROM on my Galaxy Ace 2 (last version 4.4.4, CM11).
I have enable the option to swap internal and external storage, so my "Internal" SD card is 32GB and my "External" is the original 1,10GB.
Before Kitkat, with CyanogenMod 10.2, when I move an app from phone to SD Card, on my 32GB card I found a directory ".android_secure" and in this directory I have a ".asec" for the app.
Since Kitkat (CM11), I can't find the moved app on the SD Card, it seems the ".asec" and the ".android_secure" was not used anymore. When I display the storage informations in the parameters, It sounds like if the app was moved on the true internal storage, despite the fact I have enabled the swap in NovaThor.
Could someone confirm this and explain why, or please post a copy of this message in the Galaxy Ace II development forum (thread of the rom, I'm not allowed to post here) ?