More than one Apple ID

No you cannot merge AppleIDs, and purchases are permanently tied to the AppleID you used to purchase them.

However, you should be able to log into the iTunes or App Store with either AppleID and redownload or update those content items or apps associated with that AppleID. Once installed, their function should not have anything to do with which AppleID was used to buy them.

look at this ;http://support.apple.com/kb/HT4895

In the link posted above, did you do the steps in:

I have purchased music, apps, or books with multiple Apple IDs. How can I get all of this content onto my iOS device?

First, you need to copy all of your purchased content so it is on the same Mac or PC with iTunes. This computer should be the one you sync your device with. For more information on how to move your content, see these articles:

• Mac: iTunes for Mac: How to copy purchases between computers
• PC: iTunes for Windows: How to copy purchases between computers

Next, authorize your computer to play content with each Apple ID in iTunes. Once your computer is authorized for all your content, it can be synced to your iPhone, iPad, or iPod touch.

The problem may simple be that you

A) do not have all the content from both AppleID accounts in your iTunes library on your computer

B) you have not authorized iTunes under both AppleIDs

Hi, I am struggling with this same problem. And for some reason my OLD apple ID, a .mac address, is my primary.

So, my .me address, which has more memory, cannot update ical, bookmarks, photostream, contacts. *****!

How can I switch the .me to my primary???