continuing H/F from previous file

I've had to break up a chapter into four smaller files, because otherwise my FM10 installation chokes on the referenced graphics and dies on its feet while attempting to generate a .pdf.

With a deadline looming – of course! – the owner has decided he wants more informative headers.<$paratext[h1,:h1_n]> pulls in the required information … but seems to be cut off at the file boundary. The :h1 in the first of the files is Registration, which is picked up as expected, but not in the three files that follow; and which don't have a :h1 paragraph.

The quick'n'dirty solution, I think, will be to hard-code the headers for subfiles 2, 3 and 4. I was just wondering whether there might be a more elegant solution – so, not one that involves redefining :h1 to be somehow invisible, white on white and taking up no space :-}

Thanks in advance!