Delete Foliage Instanced Static Mesh manually? Or is there a way to update the Instanced Foliage Actor?

Hello, Upp.adv. Let me help you with this. The Procedural Foliage Spawner has an option called ‘resimulate’ in the details.

For more information on the topic, please refer to this document.Procedural Foliage Tool in Unreal Engine | Unreal Engine 5.5 Documentation | Epic Developer Community