Files with same name are all messed up while syncing

I have may find the reason why this happnes.

If I make a collection and sync the collection from a machine (which is "server-like", origin machine),

the other machine, which downloads photos from cloud server, is storing the photos into a single folder.

As you can see following screenshot, "MobileDownloads.lrdata/downloaded-smart-previews/[filename]"

therefore, files that have same name has been overwritten.... in the "client-like" machine.

I have been managed the photos with same name by storing in different folers on "sever-like" machine.

But when I try to sync the photos from "server-like" machine to "client-like" machine, by using adobe cloud server,

the "client-like" machine stores all the photos into the single folder. And at this point, the photos with the same name are messed up, I GUESS....

I have no idea how to re-naming the already cloud-uploaded "Having same names but in different folers" photos...

My camera creates image name with a 4 numeric ending similar to your description.  

See the screen capture which shows my import renaming of the image name to add a 3-digit sequence number. This would avoid a repeat naming. The original 4-digit numbering will repeat after 9999 images, and the 3-digit will repeat after 999 images.