Hello Sarah,
- View Work Details shows open WOs (Not Cancel and Closed) for Location and its immidiate childs. For childs, Include Children checkbox should be checked. To see cancel and clsoe, Include History checkbox to be checked.

2. Before you decommission location or asset, all Open WOs associated should be closed (or cancelled if needed) but location or asset doesn't gets removed from these Work Orders as organization may need this information in future reference or due to some legal obligation.