Mega Scans with Ue4 Lisence To Blender and Then In Ue4

I have recently joined mega scans with Ue4 Account and this state that you can use it with ue4 only my question is if i want to modify the mesh or texture from mega scan library and then use it in ue4 if i can import it into blender first modify it and then use it with ue4 it is permissible i like ue4 and does not want to use any other game engine to make my game