Diff b/w Blocked and Withdrawn Rules

A blocked rule and a withdrawn rule are both invisible to rule resolution. Similarly, both blocked rules and withdrawn rules prevent lower-version rules with the same RuleSet and visible key from being selected by rule resolution. However, a blocked rule may block other rules in any RuleSet, and a blocked rule stops rule resolution from finding rules in higher Applies To classes. A withdrawn rule affects other rules only in one RuleSet and one Applies Toclass.
When you skim a RuleSet version that contains a blocked rule, the resulting RuleSet version does not contain the blocked rule or any rules that the blocked rule blocks. When you skim a RuleSet version that contains a withdrawn rule, the resulting RuleSet version contains the withdrawn rule.