For the messages below, the following code gets back an empty NK1 segment. It works fine if the message is an A02, A08 or A28 (I haven't tested further than that). The only data returned by the code below is the data that would be returned by issue #16

I came across this issue with v2.4.0.0 but I've just tested the latest code (v2.5.0.6) and this issue is still present.

IStructure[] nextOfKinCollection = ((NHapi.Model.V25.Message.ADT_A01)msg).GetAll("NK1"); //Returns no useful data

MSH|^~&|V500|01010|TEST|TEST|20170130125848||ADT^A01|12345||2.3||||||8859/1
EVN|A01|20170130125600|||12345|20170130125600
PID|1|12345^^^PATIENT MASTER^MRN^""""|12345^^^PATIENT MASTER^MRN^""""||TEST||20101114|F||4|16 Bothar Na Tra^^Ireland^^^1101^home^^""""||||2303|1|""""|12345^^^EPISODE NUMBER^FIN NBR^""""|12312312310|||""""|||0|Not Known / Not Stated|""""|1101||""""
PV1|1|I|TEST^08^011^A207^^Bed(s)^A207|01||""""^""""^""""^""""^^^""""|0121212J^Stephen^Peter^J^^Dr^^^Doctor Provider Number^Personnel^^^DOCUPIN^""""|||ONC|""""|""""|1|01|""""|""""|0121212J^Stephen^Peter^J^^Dr^^^Doctor Provider Number^Personnel^^^DOCUPIN^""""|8|12345^0^""""^^Visit Id|5M^20170130125600||""""||||||||||||||""""|""""|""""|B2021||Active|||20170130125600
NK1|1||||0404111111^^^test@test.com||Proxy
NK1|2||||0404111112^^^test2@test.com||Proxy 2

IStructure[] nextOfKinCollection = ((NHapi.Model.V25.Message.ADT_A03)msg).GetAll("NK1"); //Returns no useful data

MSH|^~&|V500|01010|TEST|TEST|20170130125848||ADT^A03|12345||2.3||||||8859/1
EVN|A01|20170130125600|||12345|20170130125600
PID|1|12345^^^PATIENT MASTER^MRN^""""|12345^^^PATIENT MASTER^MRN^""""||TEST||20101114|F||4|16 Bothar Na Tra^^Ireland^^^1101^home^^""""||||2303|1|""""|12345^^^EPISODE NUMBER^FIN NBR^""""|12312312310|||""""|||0|Not Known / Not Stated|""""|1101||""""
PV1|1|I|TEST^08^011^A207^^Bed(s)^A207|01||""""^""""^""""^""""^^^""""|0121212J^Stephen^Peter^J^^Dr^^^Doctor Provider Number^Personnel^^^DOCUPIN^""""|||ONC|""""|""""|1|01|""""|""""|0121212J^Stephen^Peter^J^^Dr^^^Doctor Provider Number^Personnel^^^DOCUPIN^""""|8|12345^0^""""^^Visit Id|5M^20170130125600||""""||||||||||||||""""|""""|""""|B2021||Active|||20170130125600
NK1|1||||0404111111^^^test@test.com||Proxy
NK1|2||||0404111112^^^test2@test.com||Proxy 2