Attacking and Over-turning a Florida Will: What About the Prior Wills ?

If one seeks to over-turn a will, such as if the maker of the will lacked testamentary capacity, or if the will was the product of undue influence, one must consider other (prior) wills.  If one is successful in attacking and also over-turning a will, the question becomes:  what about prior wills?  Are there valid prior wills, and, if so, are they “revived” or given effect?  This depends on who has standing, what has been alleged and the doctrine of dependent relative revocation.