I suppose that it only keeps the defined number of old versions: the oldest are progressively deleted...
It's a kind of balance between "how long I'd like to return in the past of my project" and the place it eats on a disk: myy biggest one is 2Gb, hold 13 vic4 (plus that hairs, the little bikinis) and a swimming pool. So if you count the current scene plus 3 olds plus the first copy it creates, that's 10Gb that will remain on the hard disk, till you delete them.
Actually, my Poser12 gallery has 173 folders, not to count many sub-folders, with a lot of autosave sub-sub-folders, some housekeeping is needed from time to time :grin:

𝒫𝒽𝓎𝓁

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