Load stuck on Error 6366 even though class is in an ExposedList

I'm getting a 6366 - Class marked as Web Service but is not in an Exposed List error - but the class in question looks like it is in a Web Service : This error happens when loading the schema

2023/07/18 09:44:11.474 05968-2f58 Compiler: Schema compile failed: file=C:...\49-HML.scm, schema=HML, oid=[1000001.82], elapsed time=00:07:06.923, error=6366, pos=1194293, len=21, lineno=18112

Line 18112: REFCallUpdateReferral subclassOf ReferralUpdateWCFData transient, transientAllowed, subclassTransientAllowed, webService, wsdlName = "CallUpdateReferral http://tempuri.org/";

The UpdateReferral.jox file list the class in question:

<JadeExposedList name="UpdateReferral" id="261beb5a-a5e5-4c1d-9731-89da26c3190b">
    <registryId>_WebServices_Consumer</registryId>
    <version>6216</version>
    <JadeExposedClass name="REFCallUpdateReferral" id="c492fb70-4772-497f-b613-6b20977429ea"/>
    <JadeExposedClass name="REFCallUpdateReferralResponse" id="72e2390e-159e-4fbd-b10d-13b8c1af0783"/>
    <JadeExposedClass name="REFSetReferral" id="5489c639-b2d4-4586-881d-d56910970df4"/>
    <JadeExposedClass name="REFSetReferralResponse" id="50e44102-d0fb-45d0-8c7b-f2addbc207f9"/>
    <JadeExposedClass name="REFUpdateReferral" id="3bcac415-5f55-4e4b-a311-3433b3936db6"/>
</JadeExposedList>

<Class name="REFCallUpdateReferral" id="95b3353c-c6f8-4b1f-98a4-16ff79dfd291">
    <superclass name="ReferralUpdateWCFData"/>
    <transient>true</transient>
    <webService>true</webService>
    <subclassTransientAllowed>true</subclassTransientAllowed>
    <transientAllowed>true</transientAllowed>
    <text>
    This class was generated by Jade.
     Runtime Version: 6.3

     Changes to this class may cause incorrect behavior and will be lost if 
     the class is regenerated. </text>
    <wsdlName>CallUpdateReferral	http://tempuri.org/</wsdlName>
    <ImplicitInverseRef name="request" id="9db48fbb-dc40-4f0a-88e0-21ea6b57afb9">
        <embedded>true</embedded>
        <webService>true</webService>
        <xmlNillable>true</xmlNillable>
        <type name="REFSetReferral"/>
        <wsdlName>http://tempuri.org/:request</wsdlName>
    </ImplicitInverseRef>
</Class>