Content on existing website
During a template install on an existing Squarespace website, I will try to ensure that your existing site and content is protected.
However, I recommend backing up your content before the new pages and site styles are installed on your existing website, in case there are any glitches or errors during the install.
I will not be held liable for any Squarespace-related errors that result in the loss of any content or other damages during the template installation.
Style Changes
During an existing site installation, stylistic changes that you require to match the new template will apply to the whole site, which will mean that although your existing content won’t be edited, the site will look different due to the new style settings.
When choosing an install on an existing site, you acknowledge that your existing content will look different after the new template is installed.