Connect Targets
The next step is to map the publication element in MergedLibrary to the publication element in FilteredLibrary. When you connect the output connector of MergedLibrary with the input connector of FilteredLibrary, MapForce will inform you that you have created multiple target components in the mapping. Notice that new buttons are now available in the upper-right corner of both target components: 
(Preview) and 
(Pass-through). These buttons will be used and explained in the next steps.
