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Before you migrate the Jira part with JCMA,
Make sure the relationships created in Server match the ones in Cloud
Available in the Requirement Yogi Administration > Relationships (both in Cloud and Server)
Need more information? Take look at the docs: https://requirementyogi.atlassian.net/wiki/spaces/RYC/pages/1804764144/Requirement+Yogi+for+Jira#Administrate-Requirement-Issue-relationships