prepaid to postpaid done, what happens to prepaid account

Hi, I was successful in moving from prepaid to postpaid, and moved my phone number over, fairly painless.  Does this process automatically close my prepaid account?  I had automatic top-ups on the prepaid, so to the point, will this stop now?  I assume it will, as I can no longer actually login to my prepaid account, but would like to know for sure.  thanks!