Hey there, fixthisnow123.

Thanks for joining this thread and letting me know what you've seen going on in your QuickBooks Online account. I'd be glad to lend a hand so you don't have to worry about the bcc field automatically adding info.

My first recommendation is to clear the browser cache. The cache is in place to store frequently used data to make loading web pages quicker and easier. Every so often the cache can get too full, which in turn can have an adverse effect causing viewing and performance errors. Clearing it will force the system to refresh. Here's how to do this if you're using Chrome:

1. Click the three vertical dots in the top right corner.
2. Select More Tools, then Clear Browsing Data.
3. Change the time range to All Time.
4. Only check Cached images and files.
5. Click Clear data.

The following article provides similar steps for other browsers: Clear cache and cookies to fix issues when using QuickBooks Online

In addition to clearing the cache, you may also want to double check the pre-fill setting. This particular setting auto-fills forms with previously entered content. Here's how to make sure it's turned off:

1. Click the Gear icon in the top right corner.

2. Select Account and settings.

3. Choose the Advanced tab in the left menu.

4. Verify Pre-fill forms with previously entered content is turned off in the Automation section. (Click the small pencil on the right to edit if not.)

This linked article provides even more details about using auto-recall to pre-fill transactions.

With this information, you'll be able to create new invoices without the bcc field adding a different customer's email. Please feel free to reach back out if you have any other questions. I'm only a comment or post away.