What are revisions?
Recording revisions is a feature available only to 'Pro' (and higher) subscribers, enabling you to compare with earlier versions of your specifications.
Please see Revisions - an overview for further information on how the Revisions work.
Publish history prior to the upgrade
Before upgrading to 'Pro' (and above) from a standard subscription, the platform will record information about published versions of your specification. However, you will not be able to access the 'Publish history' or compare it against the version of the specification you are publishing. This is because the Chorus subscription doesn't include the revisions functionality.
What happens after upgrading?
Once you upgrade to 'Pro' (or a higher plan) from a standard subscription, you'll be able to compare your specifications published before and after the upgrade. All versions of your specifications published before the upgrade will be accessible for comparison.