Now that we have replacing the base texture by our camo, it's time to save the file, and replace the in game one ! On the UABE window, select File and Save and save the file in /EditTutorial/ named like this : MDR_Texture (The name is not important !). When it's done, you can close the UABE soft, and go to your EditTutorial folder, copy the MDR_Texture file and paste it in
GameDir\EscapeFromTarkov_Data\StreamingAssets\Windows\assets\content\weapons\mdr\textures. When it's done, rename the original client_assets.bundle file to client_assets.bundle.old and rename the MDR_Texture file to client_assets.bundle*.