@totalmach1 

you are "sort of" right about maybe not creating an Invoice. Perhaps do not create a full invoice of all 30 lines, just the 5 you are shipping, then you can create a packing slip easily for the correct lines.

Afterward, as much as I hate to suggest it, you can void or delete the Invoice and repeat it until everything is sent, at which time you can invoice everything. The downside here is that QBO will have NO WAY of knowing what you shipped to the Customer.

If you were prepared to, you could create all the -mini-invoices which match your packing slips and then when the order is closed off in QBO you could send them all or combine into one by deleting them and making one larger one. It's a bit messy no matter how you do it. The program wasn't really intended for a ship first, invoice later scenario. (That said there are some excellent 3rd part apps out there that may be able to help you)

Can I ask why you wouldn't just invoice as you ship? It would be more common practice to do that or else wait to ship all at once. either option would be more common that what you are trying to do.

Overall I'd highly recommend you find a professional to help you

Hope this helps ! 

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McBride Bookkeeping