I have long praticed Matsumura Seito and do practice a kata called Matsumura Chinto.
I have seen this practiced in other Shorin styles always with small variances, but more often with very large variances. Seeing it practiced by several different Shotokan schools, there have been times I have asked "What kata was that" as it was totally unrecognizable from the one that I had learned.
(Matusumura) Chinto has several very important concepts/principles. Specific techniques are important, but less so. Although there are large variances in techniques, the majority of Okinawan styles (various Shorin, Goju,Isshin, Uechi) seem to grasp the underlying concepts/principles.I have not noticed this trend in styles that have undergone "Japan-fication". This is only an opinion and as I have obviuosly not observed every style, please accept it for what it's worth, and emper it with your own observations and experience.