Can Leads notes be synced with Campaigns notes?

No, Leads notes and Campaigns notes are maintained independently in BQE CORE. There is currently no automatic syncing or linking between these two. Adding or updating a note in one record does not reflect in the other. If you would like to send an idea for a new feature or improvement, submit it to our team at CORE-Ideas@bqe.com or post it on CORE Community under Feature Requests.