Notion update database node is replacing but not adding content

Folks, there are two database. One is the attendee DB list and the other is the session DB. There is a relation between these called “Session” into attendee DB and “attendee” in the session DB.
Running a automation to add attendees from a Google sheet with a csv node gives me the email addresse I have to pick from attendee DB and a variable set to the right session. Now wenn I run this automation upt update in the attendee DB with the Session I always got a replace, so old data got removed with the update database node.Is there a way to do a add like I can do manually so it will add an entry when I click on the “+”. Thanks

Hi Juergen, see if this video can help you. If not, also try searching the Make community for this topic (Notion relations/relation properties, and other similar keywords) to find previous discussions. Maybe you can find something useful, if not already done

Great, but with my relation I added: {{add(map(9.properties_value.Teilnehmer-Link; "ID"); 12.id)}} and it showed only the last entry only not the list of added.
This node was called form a Notion node doing a lookup if the individula IDs to be added. Running unitl it is done.

In that case, you’d need to retrieve the latest version of the page (via “get database item”) after it gets updated, and then use the add() function.
Or use an Array Aggregator to group all the IDs together and then mapping them into the Notion module.
Not sure about the exact answer because I would need to see your scenario