Merging multiple files in multiple sub-folders into a single folder tree
I have several sets of folder trees, each with multiple sub-folders, each sub-folder containing multiple files. I would like to merge all of this into a single folder tree, retaining the same sub-folder structure and each sub-folder with a single set of files, eliminating all of the inevitable duplicates.
Doing this manually with Windows Explorer is both tedious and time consuming. I have to select all of the files in one of the sub-folders, then drag the selection to the corresponding sub-folder in the main folder tree, choose 'move and replace' and tick 'do the same for the next x conflicts' and repeat this process for each of the many sets of sub-folders.
Although I did an online search before posting this plea for help, I have only seen utilities that will merge all files in multiple folders into a single folder, I have not seen a utility that will do what I need.
I'm hoping that someone will know of a utility that will save me doing this manually for the next many years!
Thank you in anticipation.