So, if I'm not missing something, it seems that when you level up/add skills to Goodberry, it does not take effect if it is already active (I expected this). However, it also doesn't appear to update to the new stats if I eat another one (I did not expect this). So it seems I have to choose between having some extra life when recovering a corpse, or having the full effect after succeeding.
Are there any tricks that allow deactivating the Goodberry effect so it can be refreshed?