i developed a application with in app purchases..when user buys the subscription it gets stored on my server..after testing it few times i deleted the data from server to test it again but when i buy it the sandbox environment says u

you already purchased this.TAP OK to download it again for free

also i have used this test account on my previous application?? does it means i will have to create a new test account for this application?? also by mistake i used this account on apple store..i read somewhere that doing this will make your test account invalid...is it true?? should i create a new account for it??