Hello there, @KTB123.

I understand the convenient it is that you can delete transactions in bulk.

Currently, you can set the feature requested as not yet added. In the meantime, you can look for a third-party app to help you batch-delete transactions. Thus, I encourage you to send suggestions or product recommendations. We'll take them as opportunities to improve the various features of our products.

Here's how:

1. Go to the Gear icon at the top.
2. Click Feedback.
3. Type your suggestion in the box and tap Next.

Your valuable feedback goes to our Product Development team to help improve your experience in QuickBooks. You can track feature requests through the QuickBooks Online Feature Requests website. 

I'm adding this article with a video tutorial to guide you if you want to re-enter transactions if you have deleted them accidentally: Use the audit log to re-enter deleted transactions.

Let me know if you have questions about bank transactions in QuickBooks Online. I'm always here to help. Have a great day.