Maybe someone can figure it out from the transactions I got refunded recently:
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These I think were domestic flights and they got refunded (got my Magnus about 3 months back). I can't figure why always different amounts get charged then refunded. I need to look at older months to find more of these but when I glanced through my statement every month all these PP transactions were refunded.
And to clarify they swipe my PP and I sign it, hence the charges.