Hi there, @cid8.
The Invoice page will disappear automatically after you've clicked the Save and close button. The transaction will be saved in the Sales menu.
However, if you're referring to clicking only the Save button not Save and close, you may need to perform the browser troubleshooting method. This is done to check if this is a browser-related issue.
First, you have to use an incognito browser to see if you need to clear your browser's cache. If you're able to click the Save button without having the invoice page disappear, you may go back to the regular browser and clear the cache. An alternative way is to use another supported browser.
To know more about how to handle invoices, you can check out this article: Create invoices in QuickBooks Online.
I've added this reference that may help you in the future about tracking specific aspects of your business: Run reports in QuickBooks Online.
I'll be here if you have other concerns or questions. Let me know in the comment section. Have a wonderful day and take care always!
