Here's the logic of interaction between presets and built-in previews:
1. FF always stores the ID of the built-in source image in presets. It doesn't store names of user-loaded source images.
2. When a preset is applied (e.g. via double-click), the following happens:
- If the currently loaded image is a built-in image, it replaces it with the image whose ID is saved within the preset.
- Otherwise, i.e. when the currently loaded source image is a custom user image, applying a preset doesn't replace it.
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Carl wrote:
When you choose a built in images and then open the filter editor as a create new filter it also looses the choosen internal built in image and reverts to the life preserver, while again if you have loaded an external image it is retained in the editor. |
This is because loading the filter into the Editor implicitly applies its default preset. This works exactly as I described above: when the current image is custom, it is retained. When it's built-in, it's replaced.