How do I import our non-profit expenses & donations record in excel into QB and match them bank withdrawal & deposit already downloaded into QB ?

I'd be glad to join you here and help with your online banking questions, ckshungu-gmail-c.
 

The import feature is usually used so they can be matched to existing transactions in your bank register. At the moment, we're unable to match an imported transaction to a downloaded one. Let share this article to give you more details about this: Manually Upload Transactions into QuickBooks Online.

You'll want to use the Add function instead. This will let you add the downloaded banking transactions to your bank register. Here's how:

1. Go to the Banking or Transactions menu and proceed to the For Review tab.
2. Select or click the transaction that you want to add to your register.
3. Add the name of the vendor or assign a category.
4. Enter other details that are related to the transaction.
5. Click Add or Confirm.

You can read more details about this feature here: Categorize and Match Online Bank Transactions in QuickBooks Online.

I'll also be posting these additional references here in case you might be doing these tasks in the future:

• Unmatch Downloaded Bank Transactions or Move Them to Another Account
• Undo or Remove Transactions From Reconciliations in QuickBooks Online

Tag me in your reply if you need anything else. We're always here to help.  

Hi ckshungu-gmail-c.

Hope you’re doing great. I wanted to see how everything is going about importing and matching banking transactions. Was it resolved? Do you need any additional help or clarification? If you do, just let me know. I’d be happy to help you at anytime.

Looking forward to your reply. Have a pleasant day ahead!