Hi!

Did you menage to solve this? I have a similar issue.
I can generate my merged document with the placeholders on the master page just fine, but when I update my data source only the first products in each page updates, nothing happens to the rest of the products, besides their placeholders losing the color brackets around them.

I think this is happening because there’s only one set of information on my mater page, but it’s the only one generated when I merge de document.