How to fix past mortgage payment splits?
I recently discovered that I had a single payment of extra principal towards my mortgage, back in 2016. When I applied it, the reduced principal remaining caused my last 4+ years of mortgage payments to have the wrong splits between principal and interest, since they were based on the principal remaining before that payment was applied. What is the best way to fix those past payments? Is there a better way than manually editing all 50 of them?