Changing Kafan

After laying the deceased on the kafan following a complete ghusl, just before they are actually shrouded in the kafan, sometimes some impurity from the decreased may fall on the kafan. This is especially nowadays since due to Covid much pressure may not be applied to the belly when bathing. What is the ruling? I heard the same kafan must be used now. Or is it allowed to replace it with a cleaner and fresh one?