Preparing to move from 32-bit to 64-bit server: restoring backup

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Two–or three–related questions just came to mind. I think they are closely related enough to add here, but I’ll move them into a new topic if the admins deem it necessary:

  1. Will restoring a backup made on the current/old (32-bit) server corrupt the installation on the new (64-bit) server?
  2. The installation ISO (downloaded from yunohost.org) is for version 4.1.8, but the backup is from a server that is running version 4.3.2.2. Will restoring this backup corrupt the installation? (Do I need to run sudo apt update and sudo apt upgrade on the newly installed instance before restoring the backup from the old server?)

Thanks in advance for your help.