I seem to remember the Gov Body considered a new theory which would entail ditching the 1914 date. A committee came up with an alternative, supported by one Gov body member, but the motion never got passed. It shows however that the GB had serious doubts about the 1914 date which was becoming untenable. They've taken it so far now that they can never abandon that date.
I'll dig out the references (I think form CoC or ISOCF). Does this ring any bells?