> Moodle 2.9 -> Moodle 3.1 -> Moodle 3.5 -> Moodle 3.9 -> Moodle 4.0
At first glance, look good, since most of the stepping stones are LTS.
But:
> Moodle 2.9 -> Moodle 3.1
You know that Moodle 2.7 was LTS, and can be directly upgraded to 3.1, which was the next LTS?
> Moodle 3.9 -> Moodle 4.0
Why not 4.1, which is also LTS? Ref. http://www.syndrega.ch/blog/#php-and-dbms-compatibility-of-major-moodle-releases.
> the sites data has come across ok but the theme is completely broken
Change the theme during the march to its original default theme. How to march your own theme is an entirely different story - something for the developers.
At first glance, look good, since most of the stepping stones are LTS.
But:
> Moodle 2.9 -> Moodle 3.1
You know that Moodle 2.7 was LTS, and can be directly upgraded to 3.1, which was the next LTS?
> Moodle 3.9 -> Moodle 4.0
Why not 4.1, which is also LTS? Ref. http://www.syndrega.ch/blog/#php-and-dbms-compatibility-of-major-moodle-releases.
> the sites data has come across ok but the theme is completely broken
Change the theme during the march to its original default theme. How to march your own theme is an entirely different story - something for the developers.