Yes. Once you click Publish update, the move from Squarespace 7.0 to 7.1 is permanent and there is no way back.

Most of the work in a Squarespace 7.0 to 7.1 update happens before you click anything and after you finish.

Yes — Squarespace 7.1 is the better platform on most axes that matter, and it is the only one being developed.

Content is almost never lost by accident during a Squarespace 7.0 to 7.1 migration — it is lost because nobody recorded it beforehand.

Squarespace template detectors work, but they return a template family, not a template name — and on Squarespace 7.1

Upgrade if your Squarespace 7.0 site is under 150 pages, has no store page over 200 products, uses little custom code,

Squarespace has not announced an end-of-life date for version 7.0. There is no published retirement date,

Check your version first, because on Squarespace 7.1 this question has no meaningful answer. Every 7.1 site

The Squarespace 7.1 migration tool is genuinely good at the hard part and quietly bad at the visible part.

There are two ways to migrate a Squarespace 7.0 site to 7.1, and this is the second one. The built-in tool converts your site in place,

Squarespace 7.0 and 7.1 are two generations of the same website builder, and the difference comes down to one thing:

The Squarespace upgrade to 7.1 runs from Design → Update to Version 7.1, and the tool itself is five clicks.

Squarespace has a built-in tool that converts a 7.0 site to 7.1 in place, at Design → Update to Version 7.1.

Yes — provided the old template is still installed in your Template panel. Squarespace stores site styles,

The whole job is measurement, not caution. Capture a baseline before you touch anything — rankings, URLs,

Yes, but less than most people fear, and not in the way they expect. A Squarespace 7.0 template switch

Changing a Squarespace 7.0 template does not delete content. It never has. Pages, blog posts, products,

Almost always because you are on Squarespace 7.1, where the feature does not exist. Squarespace's own documentation…

No, and there is no workaround, because there is nothing to switch to. Every Squarespace 7.1 site belongs

These are two different jobs, not two routes to the same one. On Squarespace 7.0, switching templates is a real feature…