If I switch a page from the Content editor to the Normal Builder, will I lose my text?

No. Wcart keeps both versions. Only the editor that is selected is shown on your storefront.

1. Go to Content → All Pages and edit the page.
2. Under Editor type, choose Normal Builder and click Save changes. The builder opens straight away. Later you can reopen it with Open Builder → on the page.
3. Add sections. The builder starts empty, so paste or retype your text into a text section.
4. Click Save in the builder.

If you switch back to Content editor and click Save changes, your original text is still there and shows again. While Normal Builder is selected, customers only see the builder version.