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1. the internal storage
2. your 1.1.X project's (the one created from archetype) sources
3. configured bundles and logs directories
4. Save Notification "about" and "recipients", upgrade sets default values for these fileds due to radical change to Notification object from 1.1.X to 1.2.X.

The new 1.2.X project

1. create a new 1.2.X project
2. copy any existing Java class you have developed for the former 1.1.X project and make necessary adaptations
3. include any connector bundle you might have added in the former 1.1.X project
4. configure the internal storage as done for the former 1.1.X project

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