Can I subsitute?

Help please!
Can I subsitute Classic Elite Four Season for Classic Montera? Is there a listing somewhere of Classic Elites subsitutions?

Thanks for your help.

I looked both yarns up on www.yarndex.com , and it looks as though the Four Seasons is a worsted weight, and the Montera is a heavy worsted- so there will be some difference if you substitute. You might want to try to find another worsted weight yarn to sub.