I served until the late Nineties. I know of two successful appeals , both with young women for immorality. I was on the original committee of one of them . Her father helped her appeal and we went through it all again, with us having to explain our decision to the appeal committee. As somebody said, the strange bit is when they deliberated and both the young "sister" and us elders were in the hall awaiting their decision. She sat one side of the empty Hall, the other twoelders stood aloof on the other side. I did not want it to be cold and seperate so I went over and chatted to her. The Two glared at me....
Our decision was overturned. As always the elders hated it. They did not forgive her for years - but she stayed in, with her family.. At the time I thought that was good