Buddy, often when the answers people get to their questions don't seem to be what they want to hear, it is because the objective of the question was not understood.

I can only think of two reasons to want to copy internal styles. The first is to edit the style to change instrumentation or something similar. The second is to extract that style from the keyboard and use it with a different keyboard. You say that the custom file format is not suitable for your need. If you explain what you are trying to accomplish, you may get more satisfactory answers.