Romy: welcome to ECN fourm here ,
I am in wisconsin also and i am not far from your area in fact about 15 min will ring the bell to ya.
anyway yes Wisconsin will adopt new code but for AFCI it will be enfored but i havent heard the final word yet, but they should inform me anytime soon about the state code along with few additional change along for new code cycle.
anyway for the wooden I beam type that is very tricky part i did see and some have prepunched holes but majorty of my time i dont like to use prepunched hole due what you and few other guys described and it show poor workmanship and waste extra unneed materals and time but i know Ryan [ the electrical/ building inspector ] do show up here from time to time and i think he have a link somewhere we did look it back sometime ago related with the wooden I beams
merci, marc