Updating an old MODX is rarely just an "Upgrade" button click.

The older the project, the higher the probability that it is tied to a specific PHP version, legacy Extras, custom plugins, modified classes, or long-forgotten integrations.

Therefore, the update is performed as managed technical work:

• the current environment is recorded;
• component compatibility is checked;
• a separate staging environment is set up;
• incompatibilities are resolved;
• frontend, Manager, and business functions are tested;
• only after that are the changes deployed to production.

The update itself does not turn MODX into a modern platform, but it is often a necessary stabilization stage before further migration.