Go back in time regardless of card currency

Allow go back in time regardless of the currency set in the curve app
With currency card is not a problem

And you don’t have to change the currency on the card first

Not sure I fully understand the issue. I have both UK (£) and French (€) cards linked to my Curve Card. On occasions I have paid on one when intending to use the other and have had no problems using GBIT in moving the transaction back to the correct currency card. Apologies if I haven’t grasped the concept of your post.