Where has the "see existing" link gone so that I can add files to bills/expenses/credits....?????

Hi kjbj,

Thanks for reaching out here.  It's essential that you're able to add files to your forms in QuickBooks Online.  I'll be happy to help so you can get back to what you love!

When you experience this type of unexpected behavior, I suggest clearing cache on your browser and then log into your QuickBooks account from a private or incognito browser.  If you get the same result, try another browser such as Firefox, Edge, Google Chrome or Safari.

Should the issue persist, please don't hesitate to contact us so we can work with you in real time and ensure you're able to reach your QuickBooks goals as soon as possible.

Schedule a Callback or start a Chat: click (?) Help in the upper right in QuickBooks Online > enter "Contact support" > hit Contact Us > provide a brief summary of your situation > hit Let's Talk > choose Get a callback or Start a Chat.
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Feel free to reach back out with other questions.  We'd be glad to assist!