import collection to RRC
Accepted answer
If such feature is not available, it is easy to work around. Just import the requirement artifacts without creating a module, and put them in a dedicated folder. Then create a collection containing all the artifacts in that folder.
Comments
Donald's workaround is a good one.
Also, if you working with modules instead of using collections is acceptable, importing CSV files does offer support for modules. See DNG import and export using CSV wiki
Thank you for your return. I will discuss with my customer. Maybe it will be acceptable for him.