Contribution Page - Unlink last year's contributions?
Ah yes -> make a copy instead of editing!

Events -&gt; Manage Events -&gt; under the more (on the far right) -&gt; hit Copy.


This will copy all your settings/etc but will not copy your participants. Contribution pages: very similar -> same thing!  

Contributions -&gt; Manage Contribution Pages -&gt; under the more (on the far right) -&gt; hit Make a copy.