Welcome to Project-GC Q&A. Ask questions and get answers from other Project-GC users.
If you get a good answer, click the checkbox on the left to select it as the best answer.
Upvote answers or questions that have helped you.
If you don't get clear answers, edit your question to make it clearer.
This is answered directly under the profile list of challenges:
All noted challenges which aren't logged or owned are listed. For exclusion they can be tagged in the logs with [NOT-SIGNED].
The only think you need to do is to modify the write note log to contain the "[NOT-SIGNED]" tag.