Exemptions expiration clarification

Hello,

I was wondering does anyone know the rules for exemptions expiration. Currently the Companies House API returns the following model for a particular company:

However, on Companies House own website, they don’t display any exemptions:

With the exempt_to date not being provided on the API, so do exemptions expire by default i.e. 1 year from exempt_from? Are the certain rules Companies House use to display them?

Thanks in advance