I've been running a rooted phone forever, and I tend to upgrade the OS to the latest and greatest each time one comes out.

Today I put FRG83D on my device (from the leaked FRG83) because I have read that it fixes the slow-home-screen-draw problem I have had.

I am now restoring my apps through Titanium (did a full wipe), and my question is this: Every time I move an app to my SD card, does it overwrite any data that was already there?

I've reinstalled these apps several times, but most of them were already on the SD card--after restoring from Titanium, I still have to shove them over to the SD and am wondering if I'm overwriting or just adding tons of data to my SD card (which would eventually add up to eat away my space on my SD).