When you create a “catalog” you are only storing a link to the file. The collection of links is saved to a separate file with a .cat4d ext.
Moving a file breaks the link.
This is generally more useful if you already have a structure and you are just looking to share or transport assets between projects.
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So, what’s a catalog?
The Content Browser lets you create catalogs that contain links to scenes, images and other files.
This list of links is stored in userprefs/library/browser
from the help:
How do I fill a catalog?
There are different ways to fill a catalog with files or presets:
Drag and drop files or presets from any directory on your hard drive (even from another Content Browser) onto the respective catalog.
Right-click on selected objects in the Content Browser. A menu will open, at the bottom of which you will find the Add To option. Select one of these menu points and all selected items will be placed into this catalog.
Will the catalog work on a different hard drive?
Let’s say you want to pass a catalog full of interior scenes to your colleague. The problem: The scenes themselves are not contained in the catalog, so you have to pass the folder in which the scenes are located along as well (in addition to the *.cat4d catalog file). This is what the Base Folder function is for. The Base Folder should point to the scene folder’s top-most hierarchy, where all catalog items are physically located. This folder can then be easily burned to a CD-ROM and it will still function with the catalog. In the content window, right-click on the catalog folder, select Change Base Folder and enter the CD-ROM as the new Base Folder.
The catalog should carry the same name and be located at the exact location, as defined in the Home Directory setting. This will avoid confusion on the part of the Content Browser.
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For what you are trying to do or want to do, you are right in assuming the favorite system is probably better, at least until you can lock down most of the content in your library