File regsvr coming from SSMS 2018 does not work in prior SSMS edition?

Dear all,

I've created a .regsvr file with a large struct of registered servers from my SSMS 18.3.1

I can't import this file in other SSMS, let's say

TITLE: Import Registered Servers
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Cannot import from C:\AdminSql\xxxxx\SQL Server Management Studio settings and more\Global_DBA_Settings.regsrvr.
The operation 'Import' failed. (Microsoft.SqlServer.Management.RegisteredServers)


Deserialization operation on /RegisteredServersStore/ServerGroup/DatabaseEngineServerGroup/RegisteredServer/esh01lpt37\lc__2019__bcn has failed. (Microsoft.SqlServer.Management.Sdk.Sfc)

Serializer cannot handle the property AuthenticationType. The property is not in the property bag of the instance type. (Microsoft.SqlServer.Management.Sdk.Sfc)

Thanks for your inputs,

Enric