cross version extensions not supported

[karlnaden]

error when running against QI-Core 7.0.0-ballot:

node:internal/process/promises:289
            triggerUncaughtException(err, true /* fromPromise */);
            ^

[UnhandledPromiseRejection: This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason "Could not find extension definition for MedicationAdministration.extension in QICore MedicationAdministration".] {
  code: 'ERR_UNHANDLED_REJECTION'
}

Suspect that it is due to the use of a cross-version extension for the MedicationAdministration.extension:recoreded
element. This error goes away when using mode "ms"