mutli opcua node data overlap

[gtuf]

I used well nifi-opcua, but when I use two ListOPCNodes in same opcua server,

the data was overlapped.

For example, ListOPC1 nodeID is AA and ListOPC2 nodeID is BB.
when ListOPC1 starts first, and after a few moments ListOPC2 start,
ListOPC2 data(Node ID BB) overlapped ListOPC1(No nodeID AA but NodeID BB data)
No NodeID AA data, Only NodeID BB occurs.
help me plz