Upgrading from 32 to 64 Bit?

As the title says, I’m considering upgrading from 32 to 64 bit OS.
I’ve already downloaded 64 bit and tested it out on a clean SD card. It works great and there is a noticeable jump in benchmark performance.

Now, the question is can I upgrade from the existing SD card without losing my data. I know I’ll need to format it and perform a clean install.
Importantly, I am running:

  1. Nextcloud Server
  2. MineOS Server
  3. TorrentBox
    Which I REALLY don’t want to go into the hassle of installing all over again.

Will dietpi-backup work? Or is there another way? Or is it simply not possible?
P.S. I’m not an advanced user, I saw some stuff online that looked pretty complicated so simple explanations would be appreciated.

Hi,

Simple explanation. No, not possible and not recommended.