[Maxikiwi]

Maxikiwi:
Since I don't find a 'page number field' in 'song edit' are you talking about the one in the 'create snippet' popup or  something else? The 'page [snippet]/page order [edit>file]' fields are to id the pdf page(s) and their order, not the book/album page. They may also, occasionally, indicate the book/album page depending on how the pdf was made.
I think you will have to do them one at a time. I'm planning on doing some of mine also since I have one group I play with calling out book/album pages along with titles, which I sometimes miss. I've got 100's also but I'll start with the most used and do them when I'm just sitting around relaxing.

Sorry, I forgot that I originally renamed the 'custom group' field within editor to 'page number', and may have created some confusion by omitting to mention this. I realise that the page order field within 'create snippet' refers to the pdf page order and not the book/album page - thanks.

I will do as you suggest just moving the page numbers from 'custom group' field to 'custom' field one song at a time, when I have time!

Thanks for your help.