user29: I have previously installed node 1.33.0, and now I've upgraded my node to 1.35.0. I already have a 'db' folder when I'm using 1.33.0. If I want to switch to Preview / Pre Production configuration and environment, should I create a separate 'db' folder and download the full blockchain from the beginning, or can I use my previous 'db' folder from the Legacy Testnet? Will it cause any conflict?

user5122: First, you need to upgrade to 1.35.3 for Preview or Preprod.
You will need the new configuration files for Preview or Preprod (https://book.world.dev.cardano.org/environments.html), and you need to delete the db folder and sync from scratch (which is very fast now, as the blockchains are small).

29: <p>I have previously installed node 1.33.0, and now I've upgraded my node to 1.35.0. I already have a 'db' folder when I'm using 1.33.0. If I want to switch to Preview / Pre Production configuration and environment, should I create a separate 'db' folder and download the full blockchain from the beginning, or can I use my previous 'db' folder from the Legacy Testnet? Will it cause any conflict?</p>
 5122: <p>First, you need to upgrade to 1.35.3 for Preview or Preprod.
You will need the new configuration files for Preview or Preprod (<a href="https://book.world.dev.cardano.org/environments.html" rel="nofollow noreferrer">https://book.world.dev.cardano.org/environments.html</a>), and you need to delete the db folder and sync from scratch (which is very fast now, as the blockchains are small).</p>
