Q: I just changed my email for my account but lost the credit I had left on ITunes. How do I get it back?

Hi Smith4dd,

Thanks for using Apple Support Communities.  If you've recently changed your Apple ID, you may need to take additional steps, based on the Apple service you are using with it:

Apple ID: What to do after you change your Apple ID

http://support.apple.com/kb/HT5796

In your case, these steps apply to iTunes:

iTunes (including iTunes Genius, iTunes Home Sharing, iTunes Match, iTunes Store, and iTunes U)

iOS 6 and later: Go to Settings > iTunes App Store.

• If you signed out before changing your Apple ID, enter your current Apple ID to sign in.
• If you're still signed in with your previous Apple ID, tap your previous Apple ID and tap Sign Out. Then enter your current Apple ID to sign in.

OS X Mountain Lion and later: Open iTunes.

• If you signed out before changing your Apple ID, select Store > Sign In and enter your current Apple ID.
• If you're still signed in with your previous Apple ID, select Store > Sign Out, then select Store > Sign In and enter your current Apple ID.

Windows: Open iTunes.

• If you signed out before changing your Apple ID, select Store > Sign In and enter your current Apple ID.
• If you're still signed in with your previous Apple ID, select Store > Sign Out, then select Store > Sign In and enter your current Apple ID.

Cheers,

- Ari