Gentlemen, I lost 5500 XCP.
Consider this as a gift to the Counterparty community.

How?sorry to hear that.
I copied a new passphrase on counterwallet to transfer my XCP, but I forgot to write it/paste it down..
I transfered my XCP, copied smthg else and.. it was gone.

Are you sure the XCP got transferred? I looked at blockscan, and there is no address with 5500XCP, nor has any addresses with roughly that amount been newly deposited.
There's a slight chance you were lucky - exchanges sometimes screw up withdrawals. Login to the exchange and see.
If there was error, contact them immediately and tell them to cancel the withdrawal.
It was 6 months ago. I like the help though.
I posted it now because I didn't log in my btctalk account 'til yesterday.