For example, assume my attack and defense log is full and I am still in my current season (about mid-way). Some of my attacks/defenses are still able to be shared with my clan while others cannot be shared. This excludes attacks/defenses that can be replayed by me but cannot be shared with the clan.
What would cause an attack or a defense to no longer be able to be shared? All I know that only the first four attacks and defenses can be shared and that a new season causes every attack and defense (from last season) to be no longer shareable nor viewable.
This is not a duplicate as I am asking of all the requirements that must be met to become unshareable only.