Context:

you want to create a piping specification by reusing table & filter that already exist in anothe piping specification

Warning: 

by doing that if you modify the "shared" table or filter it will impact the 2 specifications

If you want to create independent data , it will be better to use Collaborative Life cycle "duplicate" command and select the spec and the children tables and filters that you want to duplicate 

Scenario

here is an highlight to show how to 

• Copy tables from an existing specification thanks to "Compare Specification" command
• Copy existing filter by filtering them by attribute