How does escrow withdrawal at refi get entered?

I refinanced my mortgage last year, and am trying to now add the new loan and close the old one.

I had an escrow balance on the old account, which was reduced via a withdrawal, so that the account balance is zero at closing. However, I am struggling to figure out where these funds actually went. IE: I can simply adjust the balance down, but prefer to track those funds properly when adding the new loan and closing the old. Any help is appreciated!