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You may have confused google. ABCshows may have a lot of incoming links. It may be much more powerful than the new domain. You could go to the Site Explorer and check to see what your domain and page authority are for those domains. Switching your domains around will also confuse your visitors.

I 100% agree with Marisa. I don't fully understand what you're trying to accomplish, but it looks like a recipe for disaster, to be blunt. You're going to moving link-juice around in really weird ways and basically splitting your efforts. Why can't you house everything on "www.abcshoes.com"? Is there a technical reason you need the "...onlinestore.com" domain (such as a 3rd-party storefront)? I feel like we're missing a piece of the puzzle here.