Update to 3.6.8 - deletion of all individual codings!

Hi folks at BFA,

although I appreciate your regular Atahualpa update mechanisms very much, I struggled today evening in the following issue by updating from 3.6.7 to 3.6.8:

In the past all theme updates didn't influenced my own codings, i.e. .php-files for individual function definitions or post templates. The theme updates overwrote Atahualpa settings only, and didn't touched my files.

But updating from 3.6.7 to 3.6.8 all of my individual files were deleted - they were deleted by the BFA update process! - I spent some time to reconstruct them from the backup of my web hoster!

Honestly, I don't think, it is very user friendly to erase all files in the Atahualpa directory and to replace them with the updates. This blows your users to spend more than 15min (depending by amount of files and internet connectivity) to update.

The same is with the image files in the directory themes/atahualpa/images/header

Michael