Problem in importing NodeSet2.xml via 'open62541-nodeset-loader'

[Moraad Biagooi]

Dear All,

I'm checking the possibility of porting from OpenOpcUa (Windows CE app) to Open62541 (Embedded Linux).
When I try importing 'Opc.Ua.NodeSet2.Part3.xml' and other files with NodesetLoader, get the following errors,

[2024-01-20 14:02:47.178 debug/userland     Start import nodeset: /home/user/config/Opc.Ua.NodeSet2.Part3.xml
[2024-01-20 14:02:47.213 (UTC+0350)] info/session       TCP 0   | SecureChannel 0       | Session "Administrator"      | AddNode: Node could not add the new node to the nodestore with error code BadNodeIdExists

How can I fix that? I checked the source code and couldn't figure it out.
Is there a possibility to clear all nodeset in the ram and re-import that? or over-write the node in the memory?

My other question is, 

I have a node in the old configs:

<UAVariable NodeId="ns=1;i=20" BrowseName="Sec" DataType="Int32" AccessLevel="1" UserAccessLevel="1">
  <Description>Address:20</Description>
  <References> <Reference ReferenceType="HasTypeDefinition">i=23</Reference> </References>
</UAVariable>

It gives the following error,
[2024-01-20 12:42:38.189] info/session       TCP 0   | SecureChannel 0       | Session "Administrator"      | AddNode (ns=2;i=20): Type does not match the NodeClass

I tried changing the reference to      
<Reference ReferenceType="HasTypeDefinition">i=63</Reference>

In this case, it works well, but the opcua client doesn't recognize this node because it is configured with 'i=23'. And I cannot touch the client configuration.

I've been struggling with these problems for weeks to no avail.
Do you have any idea on these problems?
Thanks in advance.