I just came across this mod and appreciated that it would be a huge timesaver. What I didn't expect is that when I added it, it would disable all my existing barreling/unbarrelling machines, so I am having to find and fix issues all over my factory as a result. I'm not upset, the long term benefit is worth the hassle, but if that option was unset by default, at least when loaded in an existing game (if possible) it would prevent the issue in the future.

I am already aware of this issue, it is a legacy in the original code. I noticed that checking/unchecking this option not really changes the behavior.

It should probably be noted in that case that the mod description in that case that installing the mod midgame will cause all existing barrelling factories to fail.