How does IJC work with duplicate structure during the import process?
If a structure exists in my database and if this structure is in the import sdfile how does IJC work?
This depends on the setting for duplicate filtering.
This setting is applied to the JChem entity (table) when you create it (and can be changed later).
When duplicate detection is not set all structures will be imported, whether they are duplicates or not. When the setting is set only non-duplicate structures are imported. Any that are duplicates are not imported but are written to a file so that they can be inspected.
I see nowhere how to apply the duplicate filtering on my filed "structure"