Making use of the 2nd Partition on SD card (Link2SD)?
You need to use Link2SD to actually move the app to the second partition. If you simply use the built-in Android way of moving it to the SD card, then you aren't taking advantage of Link2SD at all.

In Link2SD, you can select apps and move them to the second partition. You can even set it up so that any new apps installed will automatically be moved over. Any current apps that were moved to the SD card using the native Android method must be moved manually to the Ext2 partition using the Link2SD app (though I think you can select multiple apps and move all of them at once).