Is there a way to track a set of items and sub items across multiple groups?

We release materials to 7 markets on a rolling basis and we’ve been tracking how markets adopt those tools in excel. So the items and the sub items and columns are the same, but I’d like each market to have it’s own group to manage its data. The problem is maintaining item and sub item updates across 7 groups. So far I’ve seen I can create a top group and then copy new items and subitems then move them one at a time to the other groups, or I can automatically create the items in the other groups, but the sub items don’t follow. Is there a better way to do this?