My Mom told me the churches that left the UMC had to pay a fee.
I found an article about it
https://www.umnews.org/en/news/exiting-congregations-face-hefty-price-tag
I think it depends on the bishop.
As a result of so many churches leaving and paying the fees the core church has amassed a great deal of money as I understand it. Money which can not be spent lavishly on the old-church's homosexual and pro-homosexual pastors and administration.
What a scam.