Party Synergy

I have 3 hunting packs because I have 30+ wolves to take care of . Im here all day everyday most days . I use all my hunts most days rating them each time and sending them out . Why is it when I sleep and come back their Synergy drops just from that short of time not hunting . I could understand if it was days on end but just a few hours its not right and messes up my hunting percents.

proficiency drops for every wolf at rollover, usually only by few points however ^^