Hi there, usernorie. Efficient processes when handling invoices are relevant within the program.
May I know which part in QuickBooks Online you're unable to see the Duplicate tab? This will help me provide appropriate information and resolution.
In the meantime, let's perform some basic troubleshooting. Sometimes QuickBooks Online (QBO) may behave unusually due to stored internet cache files. Begin by using an incognito window or private browser when duplicating an invoice. Here are the keyboard shortcuts:
Safari: Command + Shift + N
Google Chrome: CTRL + Shift + N
Mozilla Firefox or Microsoft Edge: CTRL + Sh
If this works, return to your regular browser and clear your browsing history to start anew. If not, I suggest using a different supported browser because the QuickBooks version you're utilizing now may have a temporary malfunction.
Get back to me if there's anything else you need help with your invoices. Notify me by commenting below, and I'll assist you with the information you're looking for. Take care.