Why a certain transaction which had been matched and posted already is still appearing in bankfeed as to match again for another transaction? This did not happen before?

Hi vanessa-ledgerly,

I appreciate you reaching out to us in the Community.  Having matched transactions return to your bank feeds can become time consuming.  QuickBooks Online provides the option to exclude duplicate entries, to keep your accounts accurate.  I'd be glad to help!

You can delete duplicate transactions by selecting them in the Categorized tab in the Banking/Transactions menu. From here, click on Undo so the transactions can return to the For Review tab. You can proceed with Excluding the transactions from the For Review page so they're deleted from the account.

If your matched transactions keep appearing in bank feed as a duplicate, I encourage you to contact our support team so they can assist you further with this. Here are our contact details:
 

• Schedule a Callback or start a Chat: click (?) in the upper right in QuickBooks Online > enter "Contact support" > choose Contact Us > provide a brief summary > select Let's Talk > choose Get a callback or Start a Chat.
• Social Media: Facebook, Twitter, and Instagram.
• Visit this article for the support hours: Get help with QuickBooks products and services.

I'll be one message away in case you need further assistance.