As some have stated above, everything you purchase on the EGS test will stay on the test, which is why it is so discounted. I locked the other thread because I didn't want the conversations to make people think that the EGS client had huge discounts if live.
EVERYTHING done during the test stays on the test, rewards from the missions go to your main account (or whatever the email said you would get rewarded).
As for payment information etc, if you shut that off and it still saved I will pass this feedback up, but that was the EGS saving your information, which is why you had to go through them and shut it off.
-Hapa