The Shopify Theme Updater app is an exclusive tool developed and maintained by Out of the Sandbox.
View our full list of Theme Updater FAQs here.
For Out of the Sandbox themes: if you are upgrading from Parallax 3.0+, Retina 4.0+, Mobilia 5.0+, Responsive 6.0+, Turbo 2.0+, or Artisan 1.0+ custom page templates will be carried over however, they are carried over identically and will not contain any potential updates included in the default/original template.
For Pixel Union themes: if you are upgrading from Atlantic 10.0+, Editions 8.0+, Empire 1.0+, Grid 2.0+, Handy 1.0+, Launch 2.0+, Pacific 2.0+, Reach 1.0+, Startup 7.0+, and Vogue 1.0+ custom page templates will be carried over however, they are carried over identically and will not contain any potential updates included in the default/original template.