Why does logseq append numbers to files?

When I add a pdf (for example) logseq adds a series of numbers to the file name. Now the file name has been changed, so if I want to share that file elsewhere, I have this longer filename. Why does LS do this?

It’s to prevent conflict. Let’s say you have the pdf file document.pdf and add it to logseq. Next month you save another file with the same name and try to add it to logseq.