I’ll share what I know about the transactions in For Review and In QuickBooks tab.
When QuickBooks Online (QBO) downloads bank transactions, these will flow to the For Review tab. You can review, add, assign, categorize, and match downloaded transactions to existing transactions in QBO on this tab.
Since you’ve added these transactions from the For Review tab, these will be automatically moved to the In QuickBooks tab. These transactions are also added to the register.