ImportFileAsTexture2D missing format

Hi, I’m trying to load and save a texture from file. I’m using ImportFileAsTexture2D BP node and forward the result to ExportTexture2D node. Unfortunately, this always fails, since ImportFileAsTexture2D seems to not set the texture format, which is some random value at runtime. Is there another way to save a texture loaded at runtime?

same problem, why there are no answer?