thank you for your post. Indeed, it's a solution. But I have many documents to proceed with (about 20), and the quantity of pages to convert can be from 2 to 60, and they are nnot necessarily at the same place. So, I'll have to change the flow with each document and it would take too many time creating a new flow for each. By the way, I managed converting colour directly in Adobe, select pages or range of pages. But it would be so nice to have WF solving my problem.
In any case, thank you very much taking time to propose this solution.
I have a solution -- not the most eligant. Workflow setup is to use starts with a Split node. The top Split path contains the entire document.
The lower split paths contain single pages (won't work for a range) designated by a MAX variable. These pages are monochromatized and then saved. One needs to build the number of lower split paths to equal the maximum pages that will ever need to be monochromatized.
The top split path has a Collect node which waits for a minute to allow the lower split paths to complete. Then a series of insert and delete nodes are used. The insert node takes a saved monochromatized page/job and inserts it into the job file after the page number designated by the MAX variable. The delete node then eliminates the extra page (in color) designated by the MAX variable. The number of insert/delete node pairs needs to match the maximum number of pages that will ever be monochromatized.
If the number of pages that need to be monochromatized is less than the maximum number, just repeat the last page number in the csv for remaining entries. The outcome is the last monochromatized page will be inserted multiple times but only appear once in the resultant pdf. See csv example below where page 2 will be processed twice.
I split with by page series. In one way the pages I want to keep in colour (i.e. 1;2-4;3;6;7-12) and in a second way all other pages I want to convert. It works good. But at the end , I want to get my whole pdf file back in the same order I had it in the begining. Hope I'm clear. When I use the "Fusion" tool, I find my converted pages after all the colour pages...
What are the settings that you are using for the Split node? This may be of some assistance: https://forum.support.xerox.com/t5/FreeFlow-Core/Low-Res-proof-Pages-1-2-in-colour-rest-in-black-and...
I have a colour PDF file in which I want to convert some pages in black and white. I tried splitting in two parts (one way colour to keep, the other way colour to convert) and after I tried to gather by "fusion" but the order of pages is not kept. Is there anyway to manage that ?