Skript to put all modules (fm.files) to one book - automaticaly

I use FM12 (unstructured) to make the documentation. My workflow is to work with modules. I make for each passage a module (fm.file) at the end I insert the modules to make the chapters (also fm.files). After that I create a book with the chapters.

My question: We make a new template with new page looking, new paragraph formats, new tables, etc. So I also had to adapt also all modules with the new template. I have more than 1000 modules. Did you have a script to put all modules to a book – so I can inport the new template to all modules? Or do you have an other way how I can insert the new template to all my modules?

Thanks for help.

Olivera S.