Migrer un site c56 → c58 (avant, dans cette doc, il fallait passer par une 5.7 maintenant c'est direct)
Commencer par mettre à jour le site 5.6 à la dernière version
https://URL/index.php/tools/required/upgrade
https://www.concrete5.org/community/forums/customizing_c5/5.6-to-5.7-migration-now-available
Et un peu plus de doc:
http://andrewembler.com/2015/11/upgrade-concrete5-sites-57-using-our-migration-tools
As I mentioned, they're still under active development, and we'd love to accept pull requests under both the legacy and the 5.7 add-ons. I'll be adding issues to the various GitHub repositories.