Apps not really moving from device to SD card? What's this all about?

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http://forums.androidcentral.com – Hi all, I've been reading through these forums and other pages on the web about this issue and no one seems to have a definitive answer. Why aren't the apps "really" moving from the phone to SD card when you click the Transfer to SD card button? I'm new to the Android world and came across from the iPhone. Now, i was reluctant to do this as i like the stability of Apple devices. I have several and they have never broke or crashed. Altough i love the S4 and think the phone is amazing, so far in the week i've owned it i discovered first that i couldnt really transfer apps to the (HowTos)