I have the same thing on mine, but what you copied is just a legend for the "replacement" column on the line of the invoice.

At least one mine, the invoice has "replacement" with a line through it, which I'm interpreting as it just meaning that it's not a replacement order (which it isn't). As far as I can tell, it's still an active order (i.e., still listed as "in process" rather than "canceled").