I have thousands of notes in Evernote, mostly about completed consulting projects. I don't want to delete them, but they also clutter up, to a significant degree, my ability to search and sort on the current, relevant stuff--specially because many of the topics and keywords overlap among clients. How do I "archive" or "hide" the old stuff, without deleting it, so that my current notes are easier to manage? I am very familiar with the concept of Notebooks, but what I really need is an entirely new database. I don't want to create a second account. Surely this issue has come up before.