If I'm understanding correctly - it sounds like when you are scanning, you are hitting the button to save that document and start scanning a new one - rather than hitting to button to save that document and close the scanning window. And all of the fields remain populated for the new document.
It's done that for ages (at least since version 8 or 9) and I always found it to be a time saving measure since I didn't have to wait for the scanning window to be closed and re-opened between each document, and if I'm scanning several documents there is at least some similar fields that don't have to change between each one, so I can spend less time re-populating every field each time.
I could be wrong, but I think this is the intended functionality, and probably not something that is configurable.