Trial Balance Not Balancing

Hi - we are using MYOB Business Pro and the Trial Balance was in balance as at the end of June2023 - but now it's not. 

I didn't run the Trial Balance at the end of July, but can see it's out now for August & when I back track and run the July report - its out by the same amount in July. 

Can someone please help me with this.

Thank you.

EDIT:  Also another company file which has very few monthly transactions and run in Business lite - same thing - Trial Balance fine as at end June - but out the same amount in and Aug.

This acc is out by $4909.90

The acc above is out by nearly  $34K ...ugh

...sorry, I have no idea...

2nd EDIT: Just checked two other companies not related to the two above - both running in Business Lite - both Trial Balances are are ok as at June 2023, but considerably out in July & Aug (by the same amounts - ie each company has an amount that is out in July and repeats the same amount in Aug)

Im thinking this may be a roll over end of year issue - none have been rolled yet and wont be until cleared by accountant and end year journals are processed.

But - this does need rectifying - these reports should not be out.

Thanks - please advise