Can I ignore new symptoms if they´re on the "typical" list for fms?

Do not assume. Any new symptom that is not typical for you should be discussed with your physician. Since fibromyalgia shares many common symptoms with other medical conditions, you can not assume that a new symptom is caused by fms.
No. Person asks if "new symptoms" occur which are already on list of fibromyalgia symptoms then can they be "ignored". No, because fibromyalgia symptoms are mostly non-specific, and a new symptom might be caused by a disorder exclusive of fibromyalgia. The doctor should be consulted about "new symptoms".
With caution. This is a big problem with fms. There are so many other systemic symptoms that occur with fms. Monitor new symptoms and if they progress or worsen then discuss with your pcp.