Are you running your full node, farmer and wallet on different machines?
Best would be to update your config on all machines, but I think it’s at least required on your farmer.
Depends also if the payout_instructions are transmitted on every proof or only if you join your plot NFT to a pool
Try it yourself and report it here. I the worst case it goes to your non cold wallet and you have to transfer your xch to your cold wallet manually.