AIS Base Station Report. AIS Message Type 4 to PGN 129793

[TwoCanPlugIn]

Not sure if this is an error on my part re configuration of SignalK Server and SignalK to NMEA 2000 plugin (Not that I know where or what to configure !) Running OpenPlotter with SignalK Server version 1.40

Sending NMEA 183 data to SignalK Server via UDP. Converting to NMEA 2000 with the sk-to-nmea2000 plugin and transmitting over NMEA 2000 network. Receiving/decoding via a number of tools (candump, OpenCPN etc.) and observed that a Base Station is being displayed incorrectly in OpenCPN. It seems as though it is being incorrectly converted to PGN 129038 (AIS Message Types 1,2,3) instead of PGN 129793 (Message Type 4).

Log snippets below.

Aug 17 14:41:49 2021-08-17T04:41:49.120Z signalk-server:events:nmea0183 [ '!AIVDM,1,1,,A,4@4k1EQvEHQ8a:Etkmb:JM7P0@Hj,0*3C' ]

Aug 17 13:56:45 2021-08-17T03:56:45.839Z signalk-to-nmea2000 emit {"pgn":129038,"Message ID":1,"User ID":"005030230","Longitude":144.60521666666668,"Latitude":-38.16343333333333,"Position Accuracy":0,"RAIM":0,"Time Stamp":0,"AIS Transceiver information":0,"Nav Status":0}

Apologies that I don't know how to get the pretty json text for the object, so just pasted the text from the data viewer.
mmsi
"005030230"
navigation.position
{
"longitude": 144.60521666666668,
"latitude": -38.16343333333333
}
sensors.ais.class
"BASE"