What is the burden on a party seeking to cancel or reduce arrears?

There is a heavy burden on the party seeking to reduce or cancel arrears: D.M.H.P. v. R.J.C.P., 2018 BCSC 1755 at para 73. The leading case is Earle v. Earle, 1999 BCSC 289, which concluded that the applicant must provide detailed and full financial disclosure showing the change is significant and long lasting, the change was real and not one of choice, and every effort was made to earn money during the time in question but those efforts were not successful.