In order to update existing CMMN 1.0 XMLs to valid CMMN 1.1 the following adjustments must be done.

• The namespace must be updated as follows:

Affected ElementsDefinitionsCMMN 1.0](http://www.omg.org/spec/CMMN/20131201/MODEL">)CMMN 1.1](http://www.omg.org/spec/CMMN/20151109/MODEL">)

• The element from expressions must be removed:

Affected ElementsConditionCMMN 1.0 ${any-expression} CMMN 1.1 ${any-expression}
This is relevant for all elements containing a condition like IfPart, ManualActivationRule and RequiredRule

• The attributes entryCriteriaRefs and exitCriteriaRefs are dropped, so that the following adjustments must be done:

Affected ElementsPlanItem, CasePlanModelCMMN 1.0 CMMN 1.1

• The attribute description is not available anymore. Instead of the description attribute use the element:

Affected ElementsAny CMMN elementCMMN 1.0 CMMN 1.1 This is a description of the plan item…

原文: https://docs.camunda.org/manual/7.9/reference/cmmn11/migration/10-to-11/