How to combine folders in macOS using the hidden Merge options and the Ditto command
Useful info from Apple Insider
If you ever need to combine two identically-named folders together, but they contain a mix of old, new, and duplicate files, it’s likely you will want to be selective in how they are merged together. AppleInsider offers a basic guide to using the Merge option in Finder to keep only the files you want intact.
Source: How to combine folders in macOS using the hidden Merge options and the Ditto command
