When importing these textures into the UE editor, it recognizes that T_AGR_Test_Diffuse_1 actually consists of 10 textures (from 1001 to 1010), and instead of creating 10 separate textures, it creates a single virtual texture. The same happens with T_AGR_Test_ERM_1 and T_AGR_Test_Normal_1. As a result, instead of having 30 textures total, we end up with just three virtual textures, which are then connected to the material. Consequently, the model ends up being colored in different colors.