When a new cohort was created it was not possible to configure it.
CA Mobile Application Management 14.4
When the MAM-TENANT table in the db was analysed the newly configured tenant could not be found however there were several rows where the value for TENANT_NAME was null
Removing these null rows and restarting tomee allowed the missing cohorts to correctly populate.
It is suspected that these null rows were pre-existing prior to the upgrade to 14.4