Error upgrading database


I run an upgrade from server 1.4.14 to 2.0.30 on debian 8, install is correct but there is no migration of database, on the new interface i can’t see clients and configuration parameters are lost, in media/BACKUP/urbackup/urbackup i see my old db (~ 1 GO) and server settings and in var/urbackup the database is only 51200 KB (empty database), is there a possiblity to manually upgrade database 1.4 to 2.0