Is User Defined error will rid out after IRIS upgrade

Hello Community,.

I've updated the IRIS community form 2023.2 to 2023.3 and I didn't see the User defined(Sample) error messages in ^IRIS.Msg global even I verified in both pointer and data level. I re run the set x=##class(%MessageDictionary).Import("error.xml") After import I could see the pointers and data in ^IRIS.Msg

Is the User defined error will reset from the server after IRIS upgrade?

Regards,

Ashok