Recently we had question about how to sync membership from multiple groups into one.
In this scenario there is specific product which uses ADLDS with predefined Groups, like Administrators, Operators and Users. So in order to use this product you need to sync your users from different AD domains to this ADLDS instance and include these users into predefined groups.
How can it be done with the Quick Connect?
In this case we need 2 steps for each source domain. One is to provision user accounts and another one to update group membership.
Also we need to map groups manually using Mapping Tab.
Since we need to keep members previously synced from other domains in steps which update membership we need to select option "In the target attribute, keep references to objects that are not mapped" like on screenshot below.