only some contacts from iphone are syncing to imac

Tale as old as time, but reading old posts hasn't helped...I have a bunch of contacts on my iphone that are not getting ported to my imac. The weird thing is that at least one of the missing contacts is in the iCloud group when I toggle groups to only show iCloud contacts. I figured maybe only the non-icloud contacts weren't syncing, but that doesn't apear to be the case. Also, how do I bulk update my contacts to put them all in the group that syncs to my mac? I just want them all everywhere, doesn't seem like it should be that complicated =-/