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We want to merge two magento installs into one, combine two different product ranges and their respective websites into one backend. All we need is to combine the products and websites of both installs. (And I realise that "all we need" is more complex than it seems at first sight.) Old orders can still be opened in the old install, old customers with login will loose their account on one install.

Websites, categories, attributes, bundled products and more have to be handled as well. Product images, product stock... Some of these will probably be done manually.

I would like to get an idea of what else has to be handled, what I'm forgetting here. I would like to know if you have done this before, successfully, and how you did proceed.

  • Not done this before, but I'd reckon one of the biggest complexities will be duplicate attributes. – ProxiBlue Jan 27 '14 at 15:33
  • I've compared both attribute lists. Many attributes are used in both installs. I don't see how this is going to be a problem, as the product export/import uses the attribute names, not the ids. So as long as the names are identical, I guess it will work. – User3999 Jan 29 '14 at 9:07
  • Good point, did not consider that fact. – ProxiBlue Jan 29 '14 at 23:28
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Maybe this tutorial for merging products, stocks and customers using magento dataflow can help: http://www.demacmedia.com/magento-commerce/mini-tutorial-how-to-merge-two-magento-installs/

You will need to create a separate attributes set and add the attributes from the 2nd site manually or using a script because magento doesnt have a built in support for import/export attributes.

And there is a free extension on that page for mapping category ids to new ones.

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