In addition to any of the strengths of Wing Chun's techniques and principles, the fact that it is so widely taught could be considered advantageous. If an individual practices a very rare and exotic form of Kung fu or martial arts in general, years can be devoted to a discipline only for a student to be in a predicament should their teacher die, relocate or retire. The student may have to relocate for work or family. However, finding a new wing chun school might not be too hard. Now assuming we are not talking about a flake just bouncing from school to school and organization to organization, can someone easily transition technically from one sub-style of wing chun to another and continue his development or are the lineage variations of this style so different that they are technically incompatible or impossible to integrate with prior training?

I know that politically these various organizations are quite separate, so I'm focusing specifically on facing the challenges of modifying forms, footwork, trading practices, etc to fall in line with a new different lineage of wing chun.

Thanks in advance