Hi,
The heart mark favorites among all presets.
You give a preset a heart mark by clicking the heart in the top preset selector or left of the preset name in the browser.
You remove markings by clicking the heart again.
You can sort the favorites to be first in the browser list, if you click click the heart left of the attribute NAME at the top of the browser list.
So if you - like you say - does'nt mean the heart, then i have no idea what you talk about.
Favorites are not copied or moved to a speciel bank.
EDIT: I forgot - Only Liked presets is shown in the Browser, when "Liked" is selected in the left panel of the preset browser. EDIT END.