Thanks Moini and Brynn, I will get back to you with more information soon, am in Austalia and we have been having serious heatwaves, with the latest one topping them all, and I have shelved everything non essential until it cools a bit. It is possible to delete one page in PDF shuffler, save it, and load the single page because, as you say, Inkscape doesn't support multiple pages, also I couldn't see how to select a particular page on the import dialogue, will check again unless my version is out again, or I missed it. Inkscape defaults to the initual page anyway, which answers a question of yours Brynn. The initial page was the one I wanted, though of course, this may not always be the case. Multiple page handling might be a handy feature request? The original problem was that a large svg graphic was missing, plus some other minor things. Sorry about the poor description.
My options to create a simple three fold brochure were Libre Office, which is too fiddly to use for this purpose in my opinion, and Scribus, which I don't know, so I took the path of least resistance and used Inkscape which i am getting better with all the time and seriously love it, the layout reminds me of early Corel Draw versions, but with modern power. I must learn Scribus BTW, am slowly getting back into things after an hiatus due to health.