[ORCAD] how to integrate several design in a root schematic?

orcad error cap0043

hello,
I have to integrate several design in a big design:
Each one is a independant project.
at the moment, I use a top schematic and hierarchical block.
For each block, I copy and paste each page in the new block:
for exemple, for a RF design which has 4 pages: I open each pages / select all / copy / and paste in a new page in the RF block of my hierarchical design.
I guess it's not the easiest way to do such thing...

I would like to link my hierachical block to existing design without having to copy and paste each pages. At the moment, it don't work:

I select create a hierarchical block
In implementation type, I select schematic; in implementaiton name a put RF; in path and filename, I browse to the existing RF design (.dsn)(located in a subdirectory of my root design)
I draw my block
When I double click on the block to descend hierarchy, I get a popup with "new page in schematic" page 1. And if I click OK I get a popup error CAP0043: "cannot create new schematic in library or different design!"

What's going wrong? is it possible to link hierarchical block to existing schematic or do i have to continue to copy and paste ?

Thanks for your answer.

Ulrich

Try to ask in this forum:
https://www.orcad.com/forums