Rubuta ci gaba don wannan sakin layi - A shekara ta 1649, kashi ɗaya bisa uku na ƙauyen ya lalace a cikin wuta. Bayan Yaƙin Villmerger na Biyu
na 1712, an raba ƙasashen Freie Ämter zuwa kashi biyu. Wani sashi na sabon layin iyaka, yana fadada yamma daga cocin a Oberlunkhofen zuwa "Hochgericht" a Fahrwangen, ya wuce kai tsaye ta Boswil, tare da yankin arewacin da ke ƙarƙashin ikon majami'un Furotesta na Zürich, Bern da Glarus, da kuma yankin kudu da ke ƙarƙashin ikon majami'un Katolika. Saboda matsayinta na musamman a ƙarƙashin ikon hukunce-hukuncen biyu daban-daban, ci gaban Boswil ya iyakance. Ko da tare da samuwar Jamhuriyar Helvetic a 1798, Boswil ya kasance ya rabu tsakanin gundumar Baden da sabuwar gundumar Aargau, har sai da aka haɗu da gundumar biyu a 1803 a matsayin gundumar Aargau. Tun daga wannan lokacin, Boswil ya kasance wani ɓangare na gundumar Muri.