Customer item tracking

We would like to keep track of how much inventory to have assigned to a customer even after the item has been returned to us
We would like to see a history of all the items/routers the customer had,

Our request would be that should a customer return a router to us that is damaged, we will then change the item/router status from “Assigned” to “Damaged” but the info should still appear on the Customer Information Tab here:

This way we can easily track how many times we have had issue a particular customer with a new router and also see the history of the previous routers (now “Damaged”) that the customer previously had