Quicken XG 2004 UK

IOMCPSC
IOMCPSC Quicken Windows Other Member

I have this version on my PC and it runs fine on Windows 11. However in one account the balance is shown as roughly twice that of the matching bank account. Is it possible that there are hidden duplicated entries in the register? That would perhaps explain the difference. If so how can I see them and then delete the duplicates?

Thanks