Followed the Redeem Gift Card Instructions for Family account, credits were still added to...

You had to sign in to your child's account instead of signing with your account and redeem. To be sure you can always redeem it via website as it will let you sign in only with single account at the moment.

This may not help for you for now but for the future (and for anyone else searching this problem)...

If your kids get an Xbox gift card and you want to put the money on their child (family) account, DO NOT follow the directions on the back of the card. That will end up putting the money on your "parent" account and you can not transfer it to your child's
account later. Here's what you have to do...

1) Go to your Xbox and log into your child's account.

2) Navigate to the Store.

3) Select the option to Redeem a Code.

4) Scratch off the code on the card and enter it VIA THE XBOX LOGGED INTO YOUR CHILD'S ACCOUNT.

5) Boom! Easy and your child can probably do it faster and easier than you. Well, mine can anyway.

I've also got like $200 in my parent account which I guess will get used for Xbox Gold for the foreseeable future and had to buy more Xbox cash to "fund" my child's account - until I figured this out.

I hope this helps a lot of people cuz it's a real bummer that we can't just move the Xbox cash from our parent to child accounts. I mean, it's still like the same "family" account. Right? Well, anyway, Happy Holidays everyone!

-ObiRon

That is exactly what I did, I logged into my son's account to redeem, but the only email available was my account email. Per one of Microsoft support answers, I included all the troubleshooting steps I have already gone through.

You would have to try contacting support and speak to billing, but generally once the funds have been redeemed, there is no way to transfer them to another account. You can
use the the funds to gift a game from your account to their accounts.

I have the same problem. Microsoft need to fix this !!!