You may need to reprint a picklist if not all items were available when it was first issued. Use Work Order Release/Print (16.6; 16.30 for enhanced .NET UI version) and set Reprint Picked Quantities to No (the default). All items that were not available before are listed.
Another way to reprint a picklist while tracking components already issued to an order is to change the status to Allocated, then re-release the order.
Changing the status to Exploded is possible, but this can cause differences in how phantom use-up logic is applied. If no components have been issued and no changes made to the work order bill or routing, then the status can be changed to Firm Planned, Exploded, or Allocated before re-releasing. Changing the status to Firm Planned eliminates changes entered manually to the work order bill or routing.