Amazon Ads: Start new campaign or restart old one?

In my account I have some old campaigns with relatively acceptable performance that I would like to try again. They are about 6-12 months old. Out of my experience with Google and Facebook ads, I know that if a campaign is inactive for a while (around 30 days) the algorithm looses traction and restarting the campaign means it will enter the learning phase again practically from scratch. Meaning, it is more sufficient to copy-start a new campaign not to mess up the old vs new data. How is it with Amazon ads? What would be the best course of action – copy-starting a new campaign or just restarting the old one?