When using MongoDB as base, the contents of that array does not display the actual names of the objects when running the Forward Engineering Schema Generation Wizard, just random words.
This is not an Erwin issue, this is how MongoDB behaves and Erwin is designed around this feature.
When running the Forward Engineering Schema Generation Wizard using a MongoDB model and arrays, select the 'Blank Value' checkbox before proceeding.
Blank Value: Indicates whether to replace the random values in a field with a blank value
per: https://bookshelf.erwin.com/bookshelf/public_html/15.0/Content/User%20Guides/erwin%20Help/Forward_Engineering_Options_for_MongoDB.html
Or alternatively, set the value of the field (so it's not random but values you want to specify
https://bookshelf.erwin.com/bookshelf/public_html/15.0/Content/User%20Guides/erwin%20Help/Defining_MongoDB_Fields.html
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