flatisfy/doc/3.faq.md

FAQ

What happens when duplicates are detected across different backends?

There is a default precedence defined for each backend. This should be defined so that the backend with highest precedence is the backend that should contain the most precise information usually.

When deduplicating, the post from the backend with the highest precedence is kept and missing info is taken from the duplicate posts (precedence is used so that in case of conflicts in a field, the data from the backend with highest precedence is used). This post contains as much data as possible, and includes references to all the other "duplicate" posts. These latter duplicate posts are then simply marked as such and never shown anymore.

All origins are kept in a urls field in the remaining post.