Is this will post Duplicated Content

[owen2011]

I have domain let say abcshoesonlinestore.com and inside pages of this abcshoesonlinestore.com is ranking very well such as affiliate page, knowledgebase page and other pages, HOWEVER i would like to change my home page and product page to shorter url which abcshoes.com and keep those inside page like www.abashoesonlinestore.com/affiliate or www.abcshoesonlinestore.com/knowledgebase as it is - will this pose duplicate content?

This is my plan to do it: the home page and product page will be www.abcshoes.com and when people click www.abcshoes.com/affiliate it will redirect 301 to abcshoesonlinestore.com/affiliate HOWEVER if someone type abcshoesonlinestore.com or abcshoesonlinestore.com/product it will redirect to abcshoes.com or its product page itself (i want to use 302 instead 301 (ASSUMING if the homapage or product page have manual penalization or anything bad we want to leave it behind and start fresh JUST assume because i read some post that 301 will carry any bad thing to new site too)

The reason i do not want to 301 from abcshoesonlinestore.com to abcshoes.com is because those many pages is ranking top 3 in GOOGLE ( i worry will lose this ranking since this bringing traffic for us)

Is this good idea or bad idea or any better idea or should i try to see the outcome - the only concern is from abcshoesonlinestore.com to abcshoes.com will pose as duplicate content if i do not use 301 - or can i use google webmaster tools to remove the home page and product page for abcshoesonlinestore.com can we tell google that?

PS: (home page and product page will have new revise content and minor design change) but inside page will stay the same design

Please give me some advise

[UnderRugSwept]

If I correctly understand what you are saying, this seems like a bad idea all the way around. You shouldn't have two different domains linking back and forth looking like the same site. If you wanted to maintain good rankings, you'd have to be doing SEO work for two separate sites. And whatever SEO benefit you think you'll be getting by having a shorter domain will be lost with all the back and forth you'll have going on there. And if your main objective is to make the domain shorter for the customers' benefit, it seems like this would also cause confusion as they're navigating your site and see two separate domains in the address bar.

[Dr-Pete]

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.