“Shift Path” by a negative value is like “Trim Tree” with a positive value.
No wonder people get confused by these tree management tools.
It’s like the “Tree Branch” which is like the dumb cousin of “Split tree”, except you need to put curly brackets in one case and not the other.
It can also be compared with “Replace Path” who is the idiot brother of “Path mapper”, as I argue here.
I’d much rather have less tools, but which can be used either with masks, either with hard values, but with a consistent syntax (and positive / negative value logic for that matter).