Guest list

Hi, does anyone know how to share your guest list from one event to another? Can't find a way to share the wedding list with the reception event as we created it after making our guest list. So far I have discovered by adding a new guest that you can invite them to both events or just one. I don't want to go down the entire list deleting and re-adding everyone to accomplish this, there must be an easier way. Any help would be appreciated!