Larry, I click on Mass Update Locations. I see seedling, bed, row, etc... I choose (click on) a seedling name. I click on delete. I click yes on the popup.
Now, if I click on Save Location Changes, and on Quit, nothing will change for that seedling, but if I click on just Quit, the location fields will be blank for that seedling. When I go back into Mass Update Locations, the seedling will still be there, waiting for me to indicate the new location of that seedling. So, if it died, or is now residing at the compost heap,
If I moved the seedling, I can now click on the bed, row, and all the other columns, and change the data. Then I click on Save Location Changes. It's quicker and easier here rather than making changes for each one on the Hybridized Seedlings page (in my opinion). The date that I make these changes can be recorded in the Misc field, or in the Other Info column.
So, the delete key here is not intended to update mass movements to the compost pile. I guess