The procedure described here
imports contacts from a .vcf file to the local address book. It would be nice to be able to pick the target address book, including one synced via a server account, just as you can pick the target calendar in the .ics importer.
One need for this is when one has put contacts in the local address book by mistake and wants to have them synced. Currently this means having to jump through several hoops and it is very easy to go the import route, only to find the contacts locally again.
The feature would make sense in other cases as well.
(This is a somewhat common problem that first-time users encounter, and the recovery being needlessly convoluted makes a bad first impression of using SailfishOS.)
Edit to add link to “the hoops”
Edit to add: This is one of three feature requests to address the “move contacts between address books” need. The other two are: People (contacts) app: Add export tool to UI and People (contacts) app: Allow selecting local contacts only