I have had customers using the "re order this order" feature in there accounts, but when they are redirected to pay via credit card through sagepay, the order number isnt changing.
EG customer purchased in may 2017 order number 12345
today customer reorders 12345 via reorders button in "my orders link"
Now I would expect the order number in admin for the "new" duplicated order to be a new number but it appears still as 12345 meaning we have 2 of the same order number in sagepay.
And in admin 12345 appears at the top of the orders, even though the last order number in admin may be 23456