The thing about the new Nat Geo test is that it's own by the testing company Illumina, which sequences DNA at Gentek labs, CA, with a proprietary software called Exnome+ from Helix. Thus it would be incompatible with your old test results, since it was done with a genotyping method. Plus the new test uses a saliva sample, while the old one used a cheek swab. Plus your old sample is at a completely different lab in Texas, owned by a separate company associated with FTDNA.
Earlier today I made a thread about the differences between sequencing vs genotyping. You might find it useful.
TLDR;
-Owned by a different company
-Tested differently, at different labs
I'm sorry, but I don't think they will update the old test with the new algorithm.