I appreciate you bringing this to our attention. I'm here to share some information regarding your concern about sending invoices in QuickBooks Online (QBO).
When creating transactions in QuickBooks, the options you can select are Save and new, Save and close, and Save and share link. To isolate the issue of why you're having the Save and Fund option, I recommend opening your account in a private (incognito) window. Using a safe browser and accessing the program from there can usually fix the issue.
You'll want to run reports for specific accounts so you can track your deposits. Please read this article for your reference: Run Reports In QuickBooks Online.
If you have other questions send invoices to QuickBooks online, and I'll get back to you.
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