Site Migration of 4 sites into 1?

[Ideas-Money-Art]

Hi Guys,

I have a massive project involving a migration of 4 sites into 1.

4 sites include:

1. **www.MainSite.com **
2. www.E-commerce.com
3. www.Membership.com
4. www.ResearchStudy.com

Goal of this project is to have 1-4 regrouped into Main Site

I will be following the best practice from this post https://moz.com/blog/web-site-migration-guide-tips-for-seos which has an awesome checklist. I am actually about to start Phase 3: URL redirect mapping.

Because all of these sites have hundreds of duplicates, I figured I should first resolve the Main Site dup issues  before creating the URL redirect mapping but what about the other domains (2,3,4) though?  Should I first resolve the Dup issues on those ones as well or it is not necessary since they will be pointing into the Main Site new domain?

I want to make sure I don't overwork the programming team and myself.

Thanks For sharing your expertise and any tips on how should I move forward with this.

[Ideas-Money-Art]

Thanks Ryan for this info!

I am relieved that I haven't spent hours for nothing

[RyanPurkey]

Hi Taysir. It sounds like you're making good headway so far. I'd eliminate duplicate content from each domain so that you're not importing any into the finalized site.  Let's say you have Page1A, Page1B, Page1C, and Page 1D.  Page1A exists on the main site and has had all its duplicates on that domain redirected into it. Page1B through D should likewise be sent to Page1A on the main site along with any of their duplicates.  The good news is you should be able to do all of this within the step you're currently working. Cheers!