Looking through comments, I see that credit card transactions cannot be combined.

Does anyone have any ideas for this?

For some reason, vendor split invoice into two seperate payments.  They are not "equal" payments, either.  When asked why, they replied "that's how our system works"

The problem is that the invoice is rather detailed, involving product, shipping, brokerage, and tax.  How am I able to properly itemize 2 expenses without re-calculating taxes, brokerage, e.g.?