When some Blend Tickets are not showing up to import into an Invoice, check the following:
Ensure the Blend Tickets are loaded. Only loaded Blend Tickets are available at invoicing. If the Blend Tickets are loaded, check the Location of the Blend Tickets. If the Location of the Blend Ticket is different than the current global Location, change the Location filter at the Select Customer or Field screen or at the Import Tickets window.
On the Select Customer or Field box for adding an Invoice, choose Select Locations to indicate the appropriate Location, then select Import Tickets.
Alternatively, go to the Select Customer or Field window for adding an Invoice and select Import Tickets. Choose a Location from the drop-down and select Apply.
Blend Tickets associated with this Location will become available.