Just noticed in the pics of the Saumur Renault (on the AMMS site that TCT was kind enough to point out) that it isn't in 1914-18 condition. There are circular ammunition drums in the crew compartment - at least 24. As we know, the Hotchkiss M1914 used metal strips. It emerges that the drums are for the Reibel M1931 , a much later modification. The photos were taken in 1997, and a lot has happened in the world of tank research and restoration since then, so it might have been put back in WWI order. Will be going to Saumur shortly, so will check. But it does imply that the partition/bulkhead could also be an inter-war mod.
"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.