While working in Catalog Admin, you are given the option to "Create categories from sub-catalogs and tags".
When that Category is created from the tag / sub-catalog, it is accessible via URL, given its ID & Name:
I was hoping to assign these category URLs as hyperlinks on a homepage - however, the links change after clicking 'Save' in Catalog Admin.
For instance, after saving a new CSS customization, the above URL would be broken, as the ID for the same category was updated from 35090 -> 35091
Is this to be expected? And is there anyway to access the Categories other than the unstable method above?