After upgrading from 1.1.7 to 1.4.2.0, no categories are shown (e.g. in the main menu). After trying the ‘normal’ solutions without any success, I discovered finally that the Manage Categories screen has been changed. Included are the new 1.4.2.0 demo screen and the screen that I’m having after the upgrade.
Question: How do I upgrade to the new screen (and I guess also database files), including the ‘Choose Store View’ and ‘Include in Navigation Menu’? Moreover, the Optimization tab seems to be removed.
For the rest, the upgrade seems to work fine.

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