for me, never.
by default, if you add a favorite file to the Resource Manager, it creates an alias (shortcut) of the file and stores that in the Applicaiton Support>Vectorworks> 2024> Libraries> Favourites..., see the attached screenshot.
A quick add for the Resource Manager, is to create an alias or shortcut of a file and drag that in the correct folder, then start Vectorworks. Just make sure the alias is from the correct version of Vectorworks. The refresh your library and the file appears in the favorites.