Changing plot claim values

By MichelJon, in Game of Thrones: The Card Game

When a card enables you to raise or reduce the claim value until the end of a challenge e.g. Winter is Coming event card, does this affect just one of the challenges? i.e. you could opt to increase the claim value for your military challenge but your intrigue & power challenges would remain as per the plot. Basically is the plot value increased for all the challenges of your turn (or could be your opponent's turn if the card enables you to reduce the plot value) or just one of the challenges?

Are you asking for the First or Second Edition?

Winter is Coming

FIRST EDITION -- Challenges: Raise the Claim value on each ico_stark.png player's revealed plot card by 1 for the duration of the challenge. Limit 1 per round.

SECOND EDITION --Play only during a challenge. Action: Until the end of the challenge, raise the claim value on your revealed plot card by 1. (Max 1 per challenge.)

In either case, the Claim value on the plot card is increased FOR THE DURATION OF THE CHALLENGE/UNTIL THE END OF THE CHALLENGE. So it only works for one Challenge, then Claim reverts to what it was before you played Winter is Coming. However, FOR THAT ONE CHALLENGE, Claim value is raised NO MATTER WHAT kind of Challenge you are in.