TestNet to PreProd - Tip diff is in minus


I have noticed Tip (diff) to be in minus, when I updated the node from TestNet to PreProd.
Do I have to delete the previous TestNet DB and start setup cardano node from scratch ( ./prereqs.sh -n preprod -f )

Also, there is an error on query “cardano-cli query tip --testnet-magic 1”


Yes, the blockchain is different, config files are different. So yeah, it is a start again. The node executable is the same as least for all versions! :wink: