Hm. I'm not sure how safe replace of non-terminal objects would be in general, so I don't want to go there.
But in this particular case, replacing an indexed of a coefficient, it should be feasible and safe to fix.
Hm. I'm not sure how safe replace of non-terminal objects would be in general, so I don't want to go there.
But in this particular case, replacing an indexed of a coefficient, it should be feasible and safe to fix.