Splunk Enterprise upgrade: Does Enterprise Security version need compatibility with old and new versions?

I am looking to upgrade Splunk Enterprise from 6.6.9 to 8.0.x. I understand this will take at least one intermediary step to Splunk 7.x. Splunk Enterprise Security 4.7.6 is also installed on the deployment and will require updating to remain compatible. The plan is to end up with SES 6.0.x. It seems that when upgrading SE the SES version should be compatible with the current version of SE and the version to upgrade to. https://docs.splunk.com/Documentation/Splunk/7.1.0/Installation/AboutupgradingREADTHISFIRST My problem then comes as I can't find a version of SES that is both compatible with 6.6.x/7.0 and 7.1+, according to the matrix on this page: https://docs.splunk.com/Documentation/VersionCompatibility/current/Matrix/CompatMatrix Am I interpreting the documentation correctly? And if so what possible workarounds could be used? Thanks