Rightstuf purchasing out of stock holiday bundles question

Question! So, I know this may sound dumb on the surface. But, knowing Rightstuf I can't let this go unanswered.

I was talking with Rightstuf support the other day about what's the hold up on my package, and they said they were waiting for Tokyo Ghoul :re 8 to be in-stock in order to ship, and well, he said "Our system won't follow through with the order unless the items are in-stock"

I'm curious... For example, if I order the Blade of the Immortal 1-4 bundle, and it's out of stock, and the sale GOES AWAY before it goes back in-stock (meaning, the "bundle" will be removed as an offer completely), will Rightstuf's "system" follow through with my order if they have all 4 volumes in-stock, even though the "bundle" is technically an entirely different item than just buying volumes 1-4 individually?

I'm wondering if anyone has purchase a bundle in the past, late, and still received their order even though the "bundle" was out of stock?

I hope I explained this question in a comprehensible manner. I know it sounds RIDICULOUS, the obvious answer would be; "of course! all the bundle is, is the 4 individual volumes priced a few dollars lower than buying them individually" but it really got me thinking, if Rightstuf depends on the "system" alone, it theoretically would NEVER ship out the order until the next sale that brings BACK the "bundle" deal.