DITA map within a DITA map

Question

I wish to have two levels of DITAMAP:

• front-matter: about, contact-us, link to parts catalog
• parts-catalog: catalog, organised by 3 categories (cat-xxx)

The front-matter would also have a link to the parts catalog.

I'm facing this issue: when I include the link to the parts-catalog in the front-matter map, DITA-OT instead inserts the 3 child categories.

Is it possible to just insert a link to the parts catalog map in the front-matter map?

Demo:

Update

Based on new knowledge I realise it's not good practice to combine two maps in DITA, and it is better to adopt a strategy that builds the document from a single map.

Answer 1

Based on new knowledge I realise it's not good practice to combine two maps in DITA, and it is better to adopt a strategy that builds the document from a single map.