Re: Modify Documents in SharePoint Site to Site
Hi @simon-allen,
I am afraid I don't fully understand the meaning of "one folders is modified".
Is it setting the properties or what, could you give more explanation?
In Flow, it is possible to do one file is modified in Site "A", they are also updated in Site "B", and also be set to work for any sub folders within a Site.
Because the files for both sites are the same, you could use Identifier to determine which files and content to change.
I have made a test on my side. Please take a try with the following workaround:
Image reference:

The flow works successfully as below, because there is an Identifier, even if the file is in a subfolder, it still work.



Please take a try.
Best Regards,
Barry