Version 5 supported
This version of Silverstripe CMS is still supported though will not receive any additional features. Go to documentation for the most recent stable version.

Migrating

Upgrading from older versions
A guide for migrating from older versions of silverstripe/linkfield
Migrating from sheadawson/silverstripe-linkable module
A guide for migrating from sheadawson/silverstripe-linkable to silverstripe/linkfield
Migrating from gorriecoe/silverstripe-linkfield
A guide for migrating from gorriecoe/silverstripe-linkfield