Problems with texture in and out of unreal engine

Hi everyone i have an issue with a texture i want to change on a horse i downloaed from FAB.
I have exported the texture so i can edit it but when i reimport it into unreal it adds an extra white layer round the outside.
Any help please it’s driving me nuts

Hello there @ANGRY_FI5H_1!

From the looks of your screenshot, your modified texture altered a value in the material, and made a transparent element visible, or the changes affected one of the texture’s maps.

Please follow UE’s documentation related to transparency in order to fix the problem. As well, make sure that all texture maps are properly assigned, and that no extra channels were created during re-import.