I have boot install in the same server with cpanel. i export all accounts with sucess but... when i erase the accounts in centovacast v2.x Stop working ftp accounts in Version 3.x. i need to recreate in V2.x to keep working. how can fix this.?

Have you checked whether internal FTP V3 is running? If you use CPANEL there may be a conflict because both use port 21. You can use ProFTP to Cpanel and sets it to a single IP on port 21. And the FTP Centova V3 will work well on another IP allocated.

This solved for us and V3 servers with Cpanel.