It would be handy to be able to apply coordinates to April tags without having to manually add them to each target. The beauty of April tags is that they are automatically acquired by iTwin. That's great if you are only using them for tie points. As control points though you still have to put the coordinates on each one individually. It would be great if we could import the txt file with the coordinates and then apply each location to the targets without having to copy and paste each x, y and z number to each tag.
One tip is to multiselect tie points and then click edit and then change type to control points. It won't help much to add coordinates though. But if names are the same then could update them from txt.