After denosing the copy is created as the last file not next to the file I denosied

Hello, 

Previously when I denoised my photo the copy was created right after the original one. It was fine as it was pretty fast to see both of them. But it changed. Right now, when I make denoise, the copy is created as the last file in the library. Did I switch something or there were some changes recently in the software?

Thanks for help.