- UPGRADING FROM BEFORE 4.0.0

# UPGRADING FROM BEFORE 4.0.0

This documentation notes internals changes between the 3.8 and 4.0 series that are primarily of interest to developers writing extensions or local customizations. It is not an exhaustive list.

- The deprecated classes RT::Action::Generic, RT::Condition::Generic and RT::Search::Generic have been removed, but you shouldn't have been using them anyway. You should have been using RT::Action, RT::Condition and RT::Search, respectively.

- The menu system has been reworked significantly; the `Privileged` and `Unprivileged` callbacks in `Elements/Tabs`, along with RT::Interface::Web::Menu, comprise the new menuing hooks.

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