Hi
Ok, I was doing totally wrong 😊. I thought I could upgrade via "upgrade from repository" between main releases (i.e 5.5 to 5.6) (My lazyness took my to thing that changing url arguments, upgrade would be faster 😊 )
I'll try to upgrade using CVS checkout / tar files between releases. Firstly to upgrade to 5.6, then 5.7 and finally to 5.8. I'll keep my results here
Thanks so much!