It does sound like it’s the wrong way around. You should see a money out transaction on the loan account, and a money in one for the business account. So the business bank balance increases by £10,000; the loan account decreases by £10,000, and if it was empty to begin with, the balance should be -£10,000.
Unless you have multiple directors, I would try and use the existing loan account if possible so you don’t end up with multiple empty bank accounts.
You can move the transaction if needed (using the bulk recoding tool). Or, if it’s just the one transaction, you can delete it and re-enter it.