If the closing balance of last year is not updated in the opening balance of current year, you need to follow these steps:
Step 1: Take backup of your company.
Step 2: Open your company in last year then run Update Master Balances process from the Housekeeping menu.
Step 3: Now, go to Administration menu then click on Change Financial Year.
Step 4: After that choose the next financial year to change.
Step 5: Select Yes on carry balances window then choose the New and Changed Masters option.
Step 6: Now, Click on the Start button and check after complete the process.