Customer merge attribute selection in C4C

[hubimate_1]

Dear Experts,

we want to merge some Account records in our system. First we try the Customer Merge function in our test tenant and than in our production tenant. We noticed that on the production tenant the "Attribute selection" has much less fields to merge and missing important fields.

Can someone explain how it works? Is there somewhere a settings for this?

Thanks in advance,

Máté