Soft Boundariesand Customer First are two default scheduling policies that meet the requirement of committing preferred resources to accounts and providing prompt service. Soft Boundaries prioritize resources that are assigned to the same account or service territory asthe service appointment. Customer First prioritize resources that have the highest customer satisfaction rating.
References: https://help.salesforce.com/s/articleView?id=sf.fsl_scheduling_policies.htm&type=5

Changing the Work Order with a closed status of "Cancelled" allows tracking Work Order cancellations and subsequent follow-ups using reports or dashboards based on Work Order status field values[23. Re-using the existing Work Order for the follow-up allows maintaining the relationship between the original customer request and the follow-up action without creating duplicate records[24. Changing the Work Order with a status of "New" would not indicate that it was cancelled before. Creating a child Work Order for the follow- up Work Order would create an unnecessary hierarchy of Work Orders that could complicate reporting and scheduling. References:[23. https://help.salesforce.com/s/articleView?id=sf.fs_work_orders.htm&type=5 [24.
https://trailhead.salesforce.com/en/content/learn/modules/field-service-lightning-basics/field-service-lightning- work-orders