I have done many posts (articles/audios) that refute the heretical stance of anabaptist's on divorce and remarriage. (See the link below to access them.) Modern day anabaptists have left the truth of Gods Word and even left the doctrines of their founding fathers like Menno Simons.
Since they love their heritage: in this post I show how their Menno not only saw the exception clause for biblical divorce/remarriage; (see past article below) he also saw and allowed preconversion (ignorance) divorce and remarriage. He never told people to break up current marriages to go back to the first one in fact he strongly teaches against it. Nor did he ever believe you were living in "on going adultery" due to past preconversion issues. See his writings right from his own teachings (The Complete Writings of Menno Simons / see page numbers) below in screen captures:
In the 3 pages above you will notice that 4 times he claims that the first is the wife. Now see what he said below...
He clearly teaches that if a man is married to a second wife (in his ignorance) that he is NOT to divorce her and go back to the first, which lines up with scripture. The mennonites are in heresy for teaching against scripture, tearing apart godly homes, and they don't even agree with Menno, who they lift up, are named after and follow.
Do not let the anabaptist's heretics deceive you as they are wicked on so many things as our links show. They are mostly spiritually dead hypocrites with a false gospel keeping the many ways of man.
See this link on my many divorce and remarriage articles :
See this link on Menno's theology:
See anabaptist's exposed here for many sins
God be praised