kan ikke flytte data mellem to tabeller

Hej,

Jeg har et lille script som opretter en bruker i en tabel og sender brugeren en bekræftelsemails.
Når brugeren har bekreftet denne mail skal brugeren flyttes fra en tabel til en anden, men det sker ikke.

har her et snit af den kode der flytter brugeren.
{
mysql_connect($db_host,$db_user,$db_pass) or die("Unable to connect to database");
mysql_select_db($database) or die("Unable to select database");

$session=htmlentities($_GET["code"], ENT_QUOTES);
$sql = "SELECT * FROM w_members WHERE session ='".$session."'";
$resultat = mysql_query($sql);

$heure=time();
$heure2=$heure-$valid2;                        // We delete outdated codes
mysql_query("DELETE FROM w_members WHERE heure<".$heure2.";");



if(false==($ligne = mysql_fetch_assoc ($resultat))){$er.='This code is wrong or has expired, please fill in the form again.<br/>';}

if($er=='')
{    //**** IF NO ERROR - START

if(!isset($_GET["BL"]))                        // If the user comes to confirm, we insert them into the members table and remove them from the waiting table
{
$nom=$ligne['nom'];
mysql_query("INSERT INTO members SET nom='".$nom."',pass='".$ligne['pass']."',email='".$ligne['email']."',IP='".$ligne['IP']."',heure='".$ligne['heure']."';");
mysql_query("DELETE FROM w_members WHERE session='".$session."'");

echo 'Thank you for confirming your inscription '.$nom.'. You are now a member of the site.';
}

else if($_GET["BL"]==1)                        // If the user comes to be blacklisted, we ask for a confirmation
{
echo 'Click <a href="'.$_SERVER["PHP_SELF"].'?code='.$session.'&BL=2">here</a> to blacklist your e-mail. This CANNOT be undone.';
}

else                                // If the user confirms they want to be blacklisted,  we insert them into the blacklist and remove them from the waiting table
{
$email=$ligne['email'];
mysql_query("INSERT INTO blackl SET email='".$email."',IP='".$ligne['IP']."',heure='".$ligne['heure']."';");
mysql_query("DELETE FROM w_members WHERE session='".$session."'");

echo 'Your e-mail, '.$email.', has been blacklisted. You won&#39;t receive anymore e-mails from us.';
}
}    //**** IF NO ERROR - END

mysql_close();
}    // If a code is entered - END

Kan poste hele scriptet hvis det trengs..

På forhånd tak.