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How can I put my data from 0.9 into a 1.0 Magento store?
I spent quite a while playing with (and in the process configuring) the options in the beta releases, and if at all possible I’d like to transfer this data to my 1.0 installation. Unfortunately upgrading to 1.0 failed spectacularly, and I had to freshly install. However, I’ve got the old installation and its database. Is there an easy way to bring it over into 1.0?
If you are just talking about product info. Your best bet is to try to export your data to .cvs using the Magneto Admin and the import into the 1.0 install.
Otherwise if you are talking about configuration info you are out of luck. See disclaimer from Magento about the Beta versions
We highly recommend not to use in production environments. Many things will change and improve as development continues and code refactoring takes place. Your data and skins will not be transferable in most cases.