If you want to manage older versions of an object differently than the current version, rules that use Noncurrent Time as the Reference Time must appear in the ILM policy before rules that apply to the current object version.
noncurrent.The next time ILM evaluation occurs, this noncurrent version is matched by the first rule. As a result, the copy at DC3 is purged and the two copies at DC1 and DC2 are stored for 2 more years.