Backup files and changing names

Hello to all

I want to backup files from one folder to another folder, but files with a slightly different name.
The source path and names are like: aaa\xxx.yyy.ext (source folder is "aaa")
The destination path and names are like: bbb\xxx\yyy.ext (destination folder is "bbb")

A solution is to write a script who copy the source to a buffer folder: like copy aaa\xxx.yyy.ext ccc\xxx\yyy.ext
after that make a backup from the "cc" folder as source to the desination folder "bbb"
and after that erase the buffer folder "ccc"

Can I do this in "one step" with SyncBack, without to use a script and a buffer folder?

Many thanks in advance!

Guy Brolskoff