This is so complicated because Morph Boas can have BCC in them, Sigma, other localities etc. The recent study that got rid of the sub species also only had about 75 specimens, so God knows there could be many, many more species/sub species. (Hog Island comes to mind, the Belize Island dwarfs, the Brazilian and Bolivian BCCs etc and so forth) or different breakdowns. I’d just use the general locality if a locality, or Mixed Locality if a Morph Boa (specifically morph boas, not locality boas that happen to have a morph, like Pure Sonoran Leopard Boas or Pure Nicaraguan Sunglows or something.)
As far as Colombians, they are probably BI if actually pure Colombian. But they may be mixed with BCC, it is possible even if they came from Colombia, farm bred or otherwise, since Colombia does have true BCC from what I understand.
The BI vs BCI thing is basically semantics til we have more specimens from a far, far wider gene pool.
This is my opinion tho, just as an enthusiast of locality boas in particular. Morph Boas are basically 3 species/sub species mixed together (Sunglows and other single genes like RLT/Key West have BCC in them, Leopard from Boa Sigma have been bred into CA and Colombia boas etc)