id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
4511	Ensure nominal attributes are not lost during alias variable elimination	Francesco Casella	Lennart Ochel	"As discussed in #4395 and #4510, scaling of variables by means of nominal values can be critical for the performance of nonlinear solvers.
A very common situation is that a trivial equation such as x + y = 0 or x = y is found in a system, where x has a carefully selected nominal attribute, while y doesn't have any.
It would be advisable that in the process of alias variable elimination, variables with nominal attribute are preferably kept, while variables which don't are preferably discarded.

- is this simple logic already implemented in the back-end?
- if not, could you please implement it?
"	defect	closed	high	1.13.0	Backend		invalid