Decal not updating

[SamirahmamodeXG56F]

Hi

I created a wall and applied decal of an image to the wall, rendered and it came out fine. Then I try to edit the decal and replace it with a new image, it is rendering with the old decal. 

[jeff_strater]

You'll need to share the model, and the image you want to use to replace the old decal, so we can investigate.