Remove items from a collection that are in another collection

Hi, I import a large number of paper metadata to a collection, let's say collection A. Then I filter some papers I'm interested in to collection B. But I can't find a quick way to remove these collection B items from collection A.
I find a related discussion https://forums.zotero.org/discussion/45326/remove-items-from-other-collections .Is there any way to solve this?
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