Here's my situation
One dynamic PDF form:
Contents in subforms are flowed layout. And for every section (e.g. Chapter 1, Chapter 2 etc) in pdf, create "New Page" to make sure that they start their contents in seperate new pages, not following the previous flowed content.
The pagination for Flowed content in subforms works ok.
But the pagination for "New Page" only works in Reader 8 and failed in lower version 7.