Already Attached Sources
It would be very nice if we could filter records in a search by those that are not previously attached to anyone; I find myself doing some redundant work looking for additional records as I have to search through records that are already attached to the person in question.
The problem with your suggestion would lie in the situation where sources (say for your relatives) had been attached to the wrong IDs. You would possibly miss these if you were concentrating on those who were not attached to anyone.1
Julia Szent-Györgyi ✭✭✭✭✭
When you use Search - Records, search results that are already attached to a Family Tree profile have a tree-stublet icon:
Unfortunately, I am not aware of any way of filtering these results out of your list, other than visually as you scroll down the page.1