Hello, I have the 5.0.2 pro version on my joomla 2.5.27. But I can't update my version to the 5.2.2
If I click on the update link, it doesn't work. Something like, no xml installation file in the archive is shown.
If I downlad the 5.2.2 core version zip, and install via the extension manager, it works, but the comments are not shown anymore in the articles. Sounds like a db schemen difference between 5.0.2 and 5.2.2

So my question is : how to update , keeping my old comments
Thank's in advanc e for your reply