I think you mean is it possible to avoid redownloading the blockchain again. It is. First you should decide what node package you you are gonna use on your Pi. Are you installing everything yourself or going with Umbrel or Raspiblitz or something Luke that. Once you know that you should be able to find out where the blockchain and chain state are stored. It is common to find them at ~/.bitcoin on most linux systems. Now this will be a new node but thats OK. You can avoid a lot of time waiting for the chain to sync.