S2S Destination + Datasource Id (CRM ID) + ID Sync
Hi guys,
I hope everyone is doing good and health.
I'm trying to implement an use case that I don't really know if it's possible or if I'm missing something.
Let me give a quick overview.
I've created a new Datasource (based on Customer ID) to onboard data from the CRM. For the onboarding process I'm basically importing only CRM_ID TRAIT_ID (ie):
1 "crm_user_user"="1"
2 "crm_user_user"="1"
.....
The file is process fine:

We have Adobe Analytics on the Website and we have server-side forwarding in place - working fine, we have other destinations.
At Data Collection (Launch) we are doing the ID Sync once the user logs in, passing the integration code of the Onboarding Datasource (created above) and the logged CRM_ID for the ID Sync - our understanding it's that this ID Sync will map the AAM UUID with the CRM ID on this Datasource (right?).
We worked with Adobe TechOps and created a S2S Destinatios (User DPID segment export) - Already in place.
I've the Profile Merge Rules in place, using "Last Authenticated Profiles" + "Cross-Device Profile Options (Person from Onboarding Datasource)" + Device Profile.
But at the Destination we never get any match, we've test all possible combinations.

Am I missing anything here? Is it possible to execute this use case? (Import onboarding CRM ID, Sync AAM to CRM ID once it logs in on the website then export via S2S custom Destination)?
Any thoughts?
Thanks
Rick