Link Two Keys in a bucket - Loosing the values for the keys

[Balasundararao]

var releasebucket = "Release_bucket9";
var release = {
id : 1,
name : "ABCD",
parent : 0
}
db.save(releasebucket, release.id, release, {links:[{bucket:releasebucket, key:"2", tag:"2"}]});

var release = {
id : 2,
name : "DEFC",
parent : 1
}
db.save(releasebucket, release.id, release);
Links are working fine. for the above case.

i added a new record :
var release = {
id : 3,
name : "JKLM",
parent : 1
}
Trying to update the key "1" meta links with the below syntax..

db.get(releasebucket, 1, function(err,parent_data, parent_meta){
    if(err) throw err;
    parent_meta.links.push({bucket:releasebucket, key:3, tag:3});
    db.save(releasebucket, 1, parent_data, parent_meta);
});

able to get the link values : curl http://localhost:8098/buckets/Release_bucket9/keys/1/,,_

when i try to access the key value( "curl http://localhost:8098/buckets/Release_bucket9/keys/1"). values become empty for key "1". Do you have any suggestions how to retain the original values of key 1: