Handling "found" items

Hi, I want to ask if there is any way how to implement 2 things.

1) Loading caches via "Search by coordinate" (and maybe on some other tabs) with selectable option "Ignore my found". Sometimes I'm somewhere and simply need to load only new caches and save it to new list.

2) Remove "all found caches" from selected list. Yes I know there is "delete" function from lists, but it simply delete downloaded data only. And I want to remove all "found" caches from current list then save it to new one, so new list will contain only "not found" items.

Thnx for any reply.