Any way to force Android to treat copied pasted images as new?

I have some art apps that only let you choose images from built-in galleries that display images chronologically. I have hundreds/thousands of images on my tablet (organized in folders), especially older ones I want to edit. It'll take forever to find within these apps galleries. One thing I noticed is that downloaded images appear at the top of these galleries. So I thought a workaround would be to COPY & PASTE the older image (via file managers) - so that it appears as new. But for some reason, Android will only treat downloaded images as new - not copied pasted images. Is there any trick to make this work? Because I'm forced to edit on Android - but it's so annoying to do simple things as in Windows.