After the changes from T6148 there is a redundant second "Is this your own certificate?" dialog in VSD-Kleopatra (not in gpg4win version):

As commented in the other Ticket the simplification proposed there importing a private key works except in the case:

No -> Open the Dialog for a third party certificate next (the one above).

But in the current version the "Mark Own Certificate" opens a second time if you choose no, not the Third party dialog.

But I think "No" should do the same as "Abort" and no second window should come up at all.
Certifiying a secret key which is not my own does not make sense to me. And should somebody need it anyway, they can always do it in a second step.