New CC# was issued as replacement card, but QBO is pulling transactions from last card..?

I'll share the process of updating your credit card account information, Gentek.

You'll have to disconnect the old account and reconnect with your updated account information from the Banking page. This way, a fresh connection to that account can be established by QuickBooks. I'll show you how.

1. In the left menu, click Transactions.
2. Go to the Banking tab.
3. Pick the account you want to update.
4. Hit the Edit ✎icon.
5. Select Edit account info.
6. Check the box for Disconnect this account on save.
7. Choose Save and close.

Now, you can reconnect the account with the new credit card number. Here's how:

1. Select Transactions on the left menu.
2. Click on the  Banking tab.
3. Pick the Link Account button.
4. Type in the bank account details.
5. Once done, hit Connect button.

For your future guidance, I've also added the following articles below:

• Categorize and match online bank transactions in QuickBooks Online
• Reconcile an account in QuickBooks Online

If there's anything else I can help you with updating the credit card information, add any details below. I'll get back to you. 

Yes, and that works fine (have already tried it), however it pulls in hundreds (thousands if you let it) of the 'old' transactions which have already been pulled in by the other card number and matched to expenses.  It becomes a nightmare trying to figure out what's already been matched and not create duplicate expenses for the transactions.

I don't recall having this issue last time?

Let me clear things up for you, @Gentek,

In QuickBooks Online (QBO), linking an account should normally let you choose the date range of the data that can be downloaded. In your case, you might have missed selecting the date which made QBO automatically download the 90 days' worth of transactions.

As a workaround, I suggest manually referring to your bank statements and reviewing your transactions. After identifying the old matched entries, you may need to exclude them to keep them from going into your company expenses.

Here's how:

1. Go to the Banking section, and select For Review.
2. Tick the box of the transaction you want to exclude.
3. Click Exclude.

For additional detail, please visit: Exclude a bank transaction you downloaded into QuickBooks Online.

I've also added an article you can refer to make the process of reviewing your bank transactions efficient: Set up bank rules to categorize online banking transactions in QuickBooks Online.

Let me know if you require further assistance with your QBO transactions by hitting the Reply button. I'm here to help anytime. Have a nice day!