Each time I copy, move, paste several items including hatches, the hatches do not get copied selected and therefore they don't get copied, moved, pasted. I included an image below. The red rectangle shows all the hatches that did not get moved.

At different zoom levels the hatches disappear. In fact, you can't always select them. The only way I have been able to isolate them is to select CTRL+A (select All)...(still not visible yet)...then deselect all visible items...& all of a sudden the hatches highlight and I can delete them...which means I also have to re-hatch all areas again.