Dear @xylophone
Thanks for your timely response, it is much appreciated within this discussion.
Application time frame and then the ability of portability is the crux of the matter.
Not having sufficient years in NZ to get the full increment of payment is not in dispute.
I emigrated to NZ in 1983 to current day (42 years), although my status remains a UK Citizen with "NZ Permanent Residency", Opal emigrated from Thailand to NZ around 2004 and acquired Citizenship before we me, (21 Years).
Upon application, at the age of respective eligibility, I would be granted a full pension but Opal would only receive approximately 55%.
We all seem to agree that the payments are applied based pro rata, per months spent in NZ pending reaching ones age for eligibility.
What appears to be ambiguous, is upon reaching the age of eligibility (65). Current policy "terms and conditions" being applied adversely could be contrary to legislation as posted by @KhunHeineken.
All applications do need to be made physically in "NZ".
Legislation doesn't appear to stipulate any tenure to meet policy of re-establishment as an "Ordinary Resident" for an eligible citizen to meet.
Again, thanks for your current impart.
Feel free to advise how your application to transport the NZ Super payments over to Thailand went seamlessly.
Always kindest regards
Paul & Opal