Thanks Paul,
I don't mean any offence, but a note should really have been left letting me know that. I don't see that the thread should have been split; it was a continuation of the previous posts and was VBA related (and still is, as we see from Charles' provision of relevant VBA codes in the other/new thread). Splitting a thread just because a not-strictly-VBA subject is mentioned doesn't appear to help matters. Should they be rejoined now that Charles has provided VBA codes?

I pretty much figured that in the meantime, however I assumed there must be some kind of glitch in my case otherwise someone (I reasoned) would certainly have mentioned it when I was being given the various methods/codes/macros/Add-ins. I thought it was clear I was trying to apply new styles settings to old documents - why would I want to apply the changes to "All files in a folder" if the files weren't old?

So the priority settings in the old documents remains and overrides my attempts to copy all-new settings. There's no problem with new documents.

I assume applying one of the two codes given me by Charles in the other thread will solve that part of the problem:
Thanks for your help once again.

Now to try and understand templates and list templates...