Don't Touch Anything
Years ago someone told me a story about a big media company. They had to rip up part of the floor in one of their offices to make repairs and discovered a tangled mass of communications cables snaking underneath.
What did they do? Replace and reconnect the cables? No. When they saw that tangled mass, they touched nothing down there and carefully replaced the floorboards. Who knows where each cable led and what content it carried? Better just to leave things as they were.
In a complicated system, unless you understand how your change make things better, better just to leave things as is.