The Goose, the Gander and the TCJA

We know that under the federal Tax Cuts and Jobs Act of 2017 (TCJA) alimony instruments executed before December 31, 2018 will carry over deductibility when modified thereafter so long as the parties (or the court?) don’t opt out of that treatment. While we all hope that we can successfully maintain this important tax leverage for the sake of restructured families by incorporating existing temporary (interlocutory) orders into 2019-and-later agreements, a question (among many) that continues to nag is, just how malleable is this rule?

https://levinedisputeresolution.com/divorce-mediation-blog/the-goose-the-gander-and-the-tcja