I talked with support service they told me that the only way to get back my character is to use Character Reactivation Service web tool, but if the announce is correct it will be available some days after the 10th of May?- Suspension of Character Reactivation Service
The character reactivation service was suspended as of Mar. 7, 2011 7:00 (PDT). Because it will take additional time to merge the character data from the “Source Worlds” and “Destination Worlds,” this service will not be immediately available following completion of the World Merge. Once a recovery date is determined we will make an announcement.