Originally Posted by stifle

I didn't say the payments breached the Barclaycard T&C, I said they were classed as cash-like translations. The Barclaycard T&C don't in any case define cash-like payments, they just say they "include" various things such as wire transfers, which clearly leaves it a possibility that there are other transactions that come under that description. The implications of making cash-like transactions may (or may not) include being charged interest immediately, having to pay a % fee, being charged a higher interest rate, having such transactions be subject to a lower credit limit, having Curve not want to process the transactions, and so on and so forth.

At the end of the day what you are trying to do is called "manufactured spend": putting transactions through a credit card that were never meant to be funded that way, so that you can claim rewards. Card providers obviously try to close this down because someone has to fund the rewards, which is easier to do out of profit margin on a normal retail transaction than on an investment platform.