When I started my project I was happy to use Groups in Xcode rather than literal folders: Since I'm using the browser in Xcode to access everything, stuff was nicely organized and I was happy.
However, now that the project is about to be shared for version control, the project folder itself is a horror show for those trying to scan it via a terminal, about 300 files, over half of which are graphics.
I'm trying to now reorganize things, creating real folders and importing them into Xcode. Unfortunately Xcode doesn't let me work with them the way it does with groups. For example, if I right-click on an actual added folder (blue, not yellow) and choose to add existing files, it doesn't actually put them in that folder, it puts them in its root.
Similarly, I can't move a file from a faux-folder (a group) into a real folder: Xcode doesn't consider the real folders to be valid places to move stuff to.
What am I missing? How can I convince Xcode to let me use the folders the way I use groups? There's an answer here to a somewhat similar question, but it doesn't actually solve my problem since I'm working with existing files.