CakePHP 2 to 3 migration - Need help


Time for me to migrate the application I made for my company. The problem is the documentation is not clear enough given the complexity of my application.

Here is the organization of my project:


App:pluginscontains plugins made by community

plugins contains plugins made by me (sub-modules in git)

My problem is that I don’t know the ordre of commands I must run in order to migrate my application.

Can this discussion serve as a reference for me (or another developer) for complex project migration?

First, I move the plugins directory (wich contains my plugins) outside the project in order to upgrade one by one.