Comment 6 for bug 1291899

Sorry for delay, was working with upstream to get the migration running successfully.

Migration is handled by nepomukbaloomigrator binary which is part of nepomuk-core and gets run once after upgrade.

Testing is covered by our new comprehensive test cases, here's the relevant one for Plasma
https://docs.google.com/forms/d/1aCEQ1LhCcytb9Fyq2ZIFgQyr41YXXO3H4IjJIwTl6jM/viewform

It's all working from my tests with meta data and search data successfully retained. The exception is Dolphin filename search which is now patched upstream
https://git.reviewboard.kde.org/r/116837/