The "financing" of this purchase (HOW it was paid) is a separate and second matter to be addressed.
Obviously, AMEX is on Company A's books and they usually pay the full amount due to AMEX, right?
However, in this case, the computer was purchased for Company B so they must pay that money back. Here we all agree, that payment should have been made to Company A, like they had loaned money.
But that is not what happened, Company B made payment directly to AMEX on Company A's account. This is where it gets messy, but it is a done deal and you cannot change the cash entries on Bank or CC.
If this is already done, there is no outstanding loan to/from either company and no change to equity as
the cash has already been loaned and paid back, so no need to carry on balance sheet from my view.
