Backstory: I send emails to Group A and Group B. Over time (and because "reasons") addresses need to shift from A to B (though rarely the other direction). Because of year-end updates to the database from which I pull the addresses, there is a significant number of these shifts from A to B; too many to seek each individual address and edit it over to the other group. The most effective approach appears to be to archive each group and start over by importing addresses. (I understand that opt-out characteristics remain with the address. So, I have no concern about mistakenly sending to a previous opt-out.) If I archive both groups, can I re-use the same original styling of the Group Name? Or, is the Group Name lost to me and I have to assign a new name?