Can you create an outline when dissolving?
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Hello H19!
Welcome to this forum

Do I understand correctly that you want to dissolve the flame, but the contour should remain? If so, you can use a Lerp (linear interpolation) node to mask the edge. Black for input A, white for input B.
I can't give an example right now. But I'll prepare one later.

It helps us if you can send a screenshot of the diagram. Then we can help you more efficiently.

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