Here's my guess ... when you import, you are performing the Import with the Copy option selected and Lightroom will by default copy photos into calendar named folders. You want to import using Add, so your named folders will appear in Lightroom.
Thanks--I will check. But why would the folders be visible when I'm importing, but not once I'm out of the importing window and just in Library?
Appreciate the help.
That's how Lightroom works.
Lightroom's Import dialog box shows your operating system folders. The Library Module Folders panel only shows folders that contain imported folders.
If it is showing just the folder the images are in and not the Top Level folder or drive letter (Windows) or drive name (Mac) right click and select Show Parent.