EDIT - Never mind. I answered a question you weren't even asking, haha.

 

i guess apps have to leave some of their data in internal memory so the system could access it easier. but 700kb is almost nothing if you say have an app which is 30mb and leaves only 1mb in internal and the rest goes to SD.
and yep almost all apps can go to SD but you have to look at other thread about apps2sd all answers and questions are there

 

That's the way the software works. I imagine the developer decides which bits get moved to teh card and which stay on the phone, if you're unhappy about it take it up with them.

 

App developers need to update their code so that you can move their app to SD and use it from there. After moving/uninstalling apps it's better to turn off the phone and restart to refresh the internal memory.