You should not get rid of or transform other Houses (for example, You should not take out the startDate or area); instead, preserve all values as the same as they were being ahead of the postponement, and update the eventStatus to EventPostponed. Why? Attributes like startDate and placement help detect https://bookmarkingfeed.com/story18534928/what-does-google-rich-snippets-autom%C3%A1tico-json-ld-opengraph-seo-mean