PasteSerialized.cs

// https://www.reddit.com/r/Unity3D/comments/94rpgc/i_wrote_a_piece_of_code_that_allows_for/

#if UNITY_EDITOR
using UnityEngine;
using UnityEditor;
public static class ComponentUtil
{
    static SerializedObject source;
    [MenuItem("CONTEXT/Component/Copy Serialized")]
    public static void CopySerialized(MenuCommand command)
    { source = new SerializedObject(command.context); }

    [MenuItem("CONTEXT/Component/Paste Serialized Values")]
    public static void PasteSerialized(MenuCommand command)
    {
        //check if they're the same type - if so do the ordinary copy/paste
        if(source.targetObject.GetType() == command.context.GetType())
        {
            EditorUtility.CopySerialized(source.targetObject, command.context);
            return;
        }
        SerializedObject dest = new SerializedObject(command.context);
        SerializedProperty prop_iterator = source.GetIterator();
        //jump into serialized object, this will skip script type so that we dont override the destination component's type
        if (prop_iterator.NextVisible(true))
        {
            while (prop_iterator.NextVisible(true)) //itterate through all serializedProperties
            {
                //try obtaining the property in destination component
                SerializedProperty prop_element = dest.FindProperty(prop_iterator.name); 

                //validate that the properties are present in both components, and that they're the same type
                if (prop_element != null && prop_element.propertyType == prop_iterator.propertyType) 
                {
                    //copy value from source to destination component
                    dest.CopyFromSerializedProperty(prop_iterator); 
                }
            }
        }
        dest.ApplyModifiedProperties();
    }
}
#endif