From the ShortPoint Dashboard > Upgrade page you can preview only the latest public version and, if available, the Beta version by clicking the Sandbox Mode button.
You may preview any of the versions starting from ShortPoint SPFx 7.1.5.xx, using the sp-preview=<version> query string at the end of your URL. Please, check this solution article for more details: Preview Any ShortPoint SPFx Version on a Page Using a URL Parameter.
- Preview Any ShortPoint SPFx Version on a Page Using a URL Parameter
- I don't want to upgrade my whole tenant. Can I enable New Upgrade for some site collections only?
- Can I check the new version on a couple of test site collections only and then trigger the New Upgrade for the rest of the site collections in my tenancy?