I was moving a large amount of data to an external drive. The Finder crashed (or appeared to restart) in the middle of the operation.
Now the files appear as "washed out" in the external drive (exFAT), and the move operation doesn't resume. If I try to move again, the Finder tells me that
The selected items can’t all be put into the same location, because at least one of them named “something” is busy.
Why does this happen? What does the washed out appearance mean? Is there a way to resume the move? Is it safe to just delete the washed out items (note that it was a move, not a copy)?