Unattaching image attachments from post without deleting the image?

Hello,

Is there a way to unattach files from posts without deleting them? Plugin perhaps?

I find it much easier to spew out the all the thumbnail images that are related to a post than one-by-one “insert to post”. But when I want to take some images out of that post and still keep the image cause it’s attached to another post.

I found very little info on this one and no topics in forum. Someone posted a idea to ideas https://www.ads-software.com/extend/ideas/topic.php?id=3338#post-14112

All help appreciated! Thanks ??