I use QBO w Live Bookkeeping. My bookkeeper has closed all months through September. Can I use JE to move June expenses btwn expense accts & blance sheet accts?

I have two expense accoutns: "Discounts Expected" sales & "Discounts Settled." Balance sheet accounts are "Reserve for Discounts" & AR.  Some expected June disocujnts have settled - say, $1000. I want to use a a JE in June to make the adjustments. Will that cause a problem?