Usando o awk:
BEGIN { RS = "" ; }
{
printf "%s %s %s %s %s %s %s\n", $1, $2, $3, $4, $5, $6, $7
}
produz:
WEBA 30-MAR-17 NA NOT_STARTED 01-APR-17 25-MAR-17 Target_Not_Started
WEBA 29-MAR-17 NA NOT_STARTED 01-APR-17 25-MAR-17 Target_Not_Started
WEBA 28-MAR-17 NA STARTED 01-APR-17 25-MAR-17 Target_Started